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Posted: 7/26/2018 6:57:06 PM EDT
[#1]
Quote HistoryQuoted:
Poop Flinging Gremlin # 47, standing by!!! 
https://www.AR15.Com/media/mediaFiles/464598/F1042788-22D5-46DB-8681-26EE8275ECF6-620221.JPG https://www.AR15.Com/media/mediaFiles/464598/7C53AD0A-4545-46DF-B7DF-31FCC41EE706-620222.JPG https://www.AR15.Com/media/mediaFiles/464598/714BA1E6-D67C-448D-98FF-3FED21207BFA-620224.JPG 
Sneak that in the zoo and tease the monkeys. When they attack you can establish total apex poop flinging dominance. 
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Posted: 7/26/2018 7:04:01 PM EDT
[#2]
Quote HistoryQuoted:
I have 3 pretty crazy ideas half assembled on my work bench. For now, here's one. My DIY recoil reducing stock for side charging upper. I cut the buffer tube to allow for more travel. I'll probably grind it cleaner later. I just wanted to test proof of concept. https://www.AR15.Com/media/mediaFiles/75400/694926D4-62FF-4C16-B95A-C0ADDF51DB4F-620247.JPG https://www.AR15.Com/media/mediaFiles/75400/D24D213C-65F4-4658-ADD6-0ACD2AE25A84-620249.JPG Oh sure, I get a stock like yours, so now you switch it.lol You’ve got my attention though. 
That spring stiff enough? I forgot there was some slop in my RASS rest during recoil, and I crawled the stock while looking through the Quadrant’s peep. First shot hit my glasses hard enough to fold the rear peep shut and scratch the shit out of my glasses. Lesson learned. 
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Posted: 7/26/2018 7:33:53 PM EDT
[#3]
Does anybody know if they are still doing the "buy 4, we'll ship 5" thing? I bought 4, planning on getting 5 for a group deal, and my shipping notice says "soda can launcher x 4" was shipped.
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Posted: 7/26/2018 8:15:48 PM EDT
[#4]
Quote HistoryQuoted:
Does anybody know if they are still doing the "buy 4, we'll ship 5" thing? I bought 4, planning on getting 5 for a group deal, and my shipping notice says "soda can launcher x 4" was shipped. ETA: Pics or it didn't happen  Attached File |
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Posted: 7/26/2018 8:31:16 PM EDT
[#5]
Quote HistoryQuoted:
Subscribed. Oh sure, I get a stock like yours, so now you switch it.lol You’ve got my attention though.
That spring stiff enough? I forgot there was some slop in my RASS rest during recoil, and I crawled the stock while looking through the Quadrant’s peep. First shot hit my glasses hard enough to fold the rear peep shut and scratch the shit out of my glasses. Lesson learned. Quote HistoryQuoted:
Quoted:
I have 3 pretty crazy ideas half assembled on my work bench. For now, here's one. My DIY recoil reducing stock for side charging upper. I cut the buffer tube to allow for more travel. I'll probably grind it cleaner later. I just wanted to test proof of concept. https://www.AR15.Com/media/mediaFiles/75400/694926D4-62FF-4C16-B95A-C0ADDF51DB4F-620247.JPG https://www.AR15.Com/media/mediaFiles/75400/D24D213C-65F4-4658-ADD6-0ACD2AE25A84-620249.JPG Oh sure, I get a stock like yours, so now you switch it.lol You’ve got my attention though.
That spring stiff enough? I forgot there was some slop in my RASS rest during recoil, and I crawled the stock while looking through the Quadrant’s peep. First shot hit my glasses hard enough to fold the rear peep shut and scratch the shit out of my glasses. Lesson learned. This thing is ugly as fuck now. But it seems like it's going to work well. Edit: looks like the MFT minimalist will work in a similar fashion. Off to the EE again.  Attached File |
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Posted: 7/26/2018 8:47:14 PM EDT
[#6]
Quote HistoryQuoted:
That is food for thought. More machining than I’m able to do though. For now I’m leaning towards a heavier tube if the 16ga wouldn’t be enough (it still might, I just dont know one way or the other). I got a quote for the heavier walled stuff. I’d be okay with the $225 price, but the $60 they tack on to simply mail out a 3’ tube is kind of insulting.  
https://www.AR15.Com/media/mediaFiles/53338/F07BAFBB-F007-4BDB-9749-6B4E607B32D6-620240.JPG I could probably tighten the bore up with chrome. I don’t know how much that costs though. Quote HistoryQuoted:
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Quoted: @qwezxc12 , you're giving me some bad ideas. I'm going to have to see if I have a suitably sized piece of tubing lying around now... Here is some remote beverage supply action:  https://www.youtube.com/watch?v=EKGaBpofkv8Is this the tubing you bought? http://www.mandrelbends.com/tube-pipe-bar/round-tubing-16-gauge/304-stainless/2-75-od-16-gauge-304-stainless-straight-tube.html I’ve been looking at tubing trying to find something just like that in a little heavier wall thickness with the same bore diameter. 16 gauge is obviously perfect for normal use, but (since I’m not an engineer) I’d maybe like to find a thicker tube for use in constructing a “soda mortar” using handloaded blanks of M195 Grenade strength or thereabouts. 16ga. might be fine, but launching a 16oz (or heavier) projectile with 26 grains of red dot would make me nervous. Maybe someone with some engineering can comment.
If people think 16ga. would be ok, then I’d get a 3’ length and try finding someone to weld it up for me. I could always fire it remotely for a while (lanyard) to test it’s integrity with some heavy loads. Edit: fix smiley and add below link and screen pic- This place has 2 7/8” stainless tubing (2.875”) with a .120” wall thickness. That’d come out to a 2.635” bore though. A little too loose I think... https://stainlessandalloy.com/stainless-steel-seamless-tube/ https://www.AR15.Com/media/mediaFiles/53338/1DCF8BFF-201F-4886-9832-78A828BE9F93-619407.JPG My suggestion for your can mortar would be a high pressure/low pressure system since you have to get it welded anyway. Make a section at the bottom (maybe 3" long) that is thick walled and has the chamber and the ported tube for the blank. This can be the same OD as the 16ga tube, but with a smaller ID. Make a cap/plug between the high pressure and low pressure sections and port the crap out of it. Make a stand off so the can does not sit on the ported plate, but 1" to 2" above it. This gives you a thick section to take the pressure of the blank, a section for the gas to expand and a baffle to slow it enough that it wont burst the can (hopefully!). Just a spitball idea. You might be better off with a really thick wall (1/2" or so) so that it would reduce the volume in the first chamber and provide more gas volume for lifting the can. I got a quote for the heavier walled stuff. I’d be okay with the $225 price, but the $60 they tack on to simply mail out a 3’ tube is kind of insulting.
https://www.AR15.Com/media/mediaFiles/53338/F07BAFBB-F007-4BDB-9749-6B4E607B32D6-620240.JPG I could probably tighten the bore up with chrome. I don’t know how much that costs though. |
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Posted: 7/26/2018 10:46:22 PM EDT
[#7]
Quote HistoryQuoted:
16ga in that diameter can get dinged really easy in transit. I can see them charging to prevent that. Most of the time it is better to get stuff local, but seamless stainless tubing is a bit of a bear to find local in small quantity. Quote HistoryQuoted:
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Quoted: @qwezxc12 , you're giving me some bad ideas. I'm going to have to see if I have a suitably sized piece of tubing lying around now... Here is some remote beverage supply action: https://www.youtube.com/watch?v=EKGaBpofkv8Is this the tubing you bought? http://www.mandrelbends.com/tube-pipe-bar/round-tubing-16-gauge/304-stainless/2-75-od-16-gauge-304-stainless-straight-tube.html I’ve been looking at tubing trying to find something just like that in a little heavier wall thickness with the same bore diameter. 16 gauge is obviously perfect for normal use, but (since I’m not an engineer) I’d maybe like to find a thicker tube for use in constructing a “soda mortar” using handloaded blanks of M195 Grenade strength or thereabouts. 16ga. might be fine, but launching a 16oz (or heavier) projectile with 26 grains of red dot would make me nervous. Maybe someone with some engineering can comment.
If people think 16ga. would be ok, then I’d get a 3’ length and try finding someone to weld it up for me. I could always fire it remotely for a while (lanyard) to test it’s integrity with some heavy loads. Edit: fix smiley and add below link and screen pic- This place has 2 7/8” stainless tubing (2.875”) with a .120” wall thickness. That’d come out to a 2.635” bore though. A little too loose I think... https://stainlessandalloy.com/stainless-steel-seamless-tube/ https://www.AR15.Com/media/mediaFiles/53338/1DCF8BFF-201F-4886-9832-78A828BE9F93-619407.JPG My suggestion for your can mortar would be a high pressure/low pressure system since you have to get it welded anyway. Make a section at the bottom (maybe 3" long) that is thick walled and has the chamber and the ported tube for the blank. This can be the same OD as the 16ga tube, but with a smaller ID. Make a cap/plug between the high pressure and low pressure sections and port the crap out of it. Make a stand off so the can does not sit on the ported plate, but 1" to 2" above it. This gives you a thick section to take the pressure of the blank, a section for the gas to expand and a baffle to slow it enough that it wont burst the can (hopefully!). Just a spitball idea. You might be better off with a really thick wall (1/2" or so) so that it would reduce the volume in the first chamber and provide more gas volume for lifting the can. I got a quote for the heavier walled stuff. I’d be okay with the $225 price, but the $60 they tack on to simply mail out a 3’ tube is kind of insulting.
https://www.AR15.Com/media/mediaFiles/53338/F07BAFBB-F007-4BDB-9749-6B4E607B32D6-620240.JPG I could probably tighten the bore up with chrome. I don’t know how much that costs though. I’m trying to shop around, but not finding much in the right size. |
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Posted: 7/26/2018 11:13:41 PM EDT
[#8]
Quote HistoryQuoted:
I ran our group buy last week. $600 even, free shipping, showed 4 in the cart, 4 on the invoice as shipped and received FIVE! Even on backorder they shipped fast. I'm very happy. I think the rest of our group is too. ETA: Pics or it didn't happen https://www.AR15.Com/media/mediaFiles/89127/28557-620343.JPG Quote HistoryQuoted:
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Does anybody know if they are still doing the "buy 4, we'll ship 5" thing? I bought 4, planning on getting 5 for a group deal, and my shipping notice says "soda can launcher x 4" was shipped. ETA: Pics or it didn't happen https://www.AR15.Com/media/mediaFiles/89127/28557-620343.JPG Oh yeah, and mine shipped a lot faster than I expected!
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Posted: 7/27/2018 1:15:20 PM EDT
[#9]
How long did your order take to ship?
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Posted: 7/27/2018 2:38:03 PM EDT
[#10]
Quote HistoryQuoted:
How long did your order take to ship? Mine has been 'processing' since the 22nd. |
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Posted: 7/27/2018 3:14:19 PM EDT
[#11]
F5 order
Ordered on the 9th Shipped on the 12th (package label created) Arrived at FedEx on the 13th Delivered on the 19th AWB order Ordered on the 20th Delivered on the 23rd PSA order (BCG &CH) Ordered on the 20th Delivered on the 25th That was plenty fast enough for me. |
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Posted: 7/27/2018 5:05:24 PM EDT
[#12]
Got the BCA side charging upper just a bit ago.
Overall, not bad. Upper is billet, nicely machined with a smooth anodized finish. No fit issues at all. PA, was out of the threaded plug for the rear of the upper. The threads are 7/16-14NC, I might get a bolt and make my own, not that its needed... BCG seems well made as well. Smooth nitride finish on the carrier and cam pin. The bolt is a typical MPI marked generic bolt, again I see no issues with it. I did check head space with a GO and NOGO, passed. The BCG rides smoothly in the upper, no binding at all. I did add a little vibra tite on the bolt handle bolt threads, if it loosens, I'll hit it with blue loc-tite next. My wife really likes it, much easier for her to charge, $120 well spent 
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Posted: 7/27/2018 6:40:29 PM EDT
[#13]
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Posted: 7/27/2018 7:52:50 PM EDT
[#14]
This thread delivers.
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Posted: 7/27/2018 11:22:23 PM EDT
[#15]
Quote HistoryQuoted:
This is significantly less ugly than the other one, and spring loaded. https://www.AR15.Com/media/mediaFiles/75400/21E34F61-CD1A-4FD7-9B06-2CF5E4CED4ED-621226.JPG My buddy brought me the mortar parts tonight, and he also brought me a really thick butt pad I think’ll work on my new stock (like your old one). I was going to bring the stuff in and get pics, but he has a pvc barrel fabbed onto the mortar parts, and if the idiots around here saw what they thought was a live mortar in the building they’d flip their shit.
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Posted: 7/27/2018 11:51:22 PM EDT
[#16]
Quote HistoryQuoted: Funny you should post, you must be psychic— I just saw your bud bottle with fins pic while searching for stuff tonight. I was searching for 60mm mortar tube wall thickness when I stumbled across your post with dimensions. That adapter looks pretty slick.  I even took a screen capture of it to remind myself.
https://www.AR15.Com/media/mediaFiles/53338/500FBF90-3698-4AFC-B435-A1FCE4E77EC9-619718.JPG I’d glady shoot bud bottles facing either direction if I can just get the right parts (semi-reasonably priced) to put them together. I’ve been on Alibaba for the last 3 hours trying to find something that could be exploited. Haven’t found anything that’s a slam dunk yet. I‘ve even thought about epoxying some fins to carbon fiber tube. Maybe those could last a while too, but might be too much cost and effort compared to something else I haven’t found yet. Need to find a plastic pipe, abs, pvc, pex....,that fits onto the aluminum bottle lid. Hot glue, epoxy, super glue to hold pipe on. Slit opposite end for Fins cut long enough to center round in tube. Glue into place or use end cap on plastic pipe to hold fins on. Oring, cup cozy...for front obtrusive rings. I'll see what I can model up next week at work. |
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Posted: 7/28/2018 12:36:35 AM EDT
[#17]
Quote HistoryQuoted:
You might be onto something. Since the fin adapter does not need to hold the propellant charge like mortar fins you could glue a short tube on. Need to find a plastic pipe, abs, pvc, pex....,that fits onto the aluminum bottle lid. Hot glue, epoxy, super glue to hold pipe on. Slit opposite end for Fins cut long enough to center round in tube. Glue into place or use end cap on plastic pipe to hold fins on. Oring, cup cozy...for front obtrusive rings. I'll see what I can model up next week at work. Quote HistoryQuoted:
Quoted: Funny you should post, you must be psychic— I just saw your bud bottle with fins pic while searching for stuff tonight. I was searching for 60mm mortar tube wall thickness when I stumbled across your post with dimensions. That adapter looks pretty slick. I even took a screen capture of it to remind myself.
https://www.AR15.Com/media/mediaFiles/53338/500FBF90-3698-4AFC-B435-A1FCE4E77EC9-619718.JPG I’d glady shoot bud bottles facing either direction if I can just get the right parts (semi-reasonably priced) to put them together. I’ve been on Alibaba for the last 3 hours trying to find something that could be exploited. Haven’t found anything that’s a slam dunk yet. I‘ve even thought about epoxying some fins to carbon fiber tube. Maybe those could last a while too, but might be too much cost and effort compared to something else I haven’t found yet. Need to find a plastic pipe, abs, pvc, pex....,that fits onto the aluminum bottle lid. Hot glue, epoxy, super glue to hold pipe on. Slit opposite end for Fins cut long enough to center round in tube. Glue into place or use end cap on plastic pipe to hold fins on. Oring, cup cozy...for front obtrusive rings. I'll see what I can model up next week at work. I was thinking at first about threading the tail tube directly onto the bottle (started a thread looking for a soda bottle thread tap here: https://www.ar15.com/forums/general/Tap-set-to-match-soda-bottle-threads-/5-2132031/ I’m not having much luck on that idea yet, but they did link to these: https://www.infiniteproductsolutions.com/adapters/bottle/?sort=featured&page=1 I like those, but the beer bottle adapter weighs over 4 ounces (according to their website), while their soda bottle adapter is about 2.5 ounces.  Attached FileYou could screw an adapter onto the 16oz bud bottle and have a short nub threaded into it and sticking out the back. That nub could be metal, and then just glue the fin section’s center tube to it. That way you just unscrew the assembly off of the beer bottle on recovery (bottle destroyed) and put it on a new one. If the fin section gets broken, then just peel it off the nub, and glue a new one on. I really like the thread adapters being metal so they can be reused over and over, but the weight is a drawback I think. Your printed adapter would be great in plastic, I just have no idea how many landings it would survive? I dunno. ETA: I’m also thinking about maybe silicone bands for obturator rings. They sell them in many different diameters and they’re thicker than rubber and likely more durable than either rubber or neoprene. They could probably be reused many times, and they are cheap in bulk too.  Attached File |
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Posted: 7/28/2018 7:08:37 AM EDT
[#18]
I was happier than a puppy with two peckers all night after getting the mortar parts, but after I set it up this morning and got a good look at it, I’m kinda screwed. There isn’t enough meat in the yoke or barrel collar to ream it out for a can cannon barrel. I thought there would be, but apparently they tried to keep the weight down on the 50mm sets. Mounting a 66mm bored tube on this thing will take some serious surgery.
I’ll have to think on it a while... It has a fake tube and cup on it right now. I’ll have to clean it up.  Attached File |
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Posted: 7/28/2018 6:14:14 PM EDT
[#19]
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Posted: 7/28/2018 7:46:05 PM EDT
[#20]
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG
Of course you do all this after I order that skeleton stock off Amazon.
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Posted: 7/28/2018 7:48:24 PM EDT
[#21]
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Looking good.
Of course you do all this after I order that skeleton stock off Amazon. Quote HistoryQuoted:
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG
Of course you do all this after I order that skeleton stock off Amazon. I only went this route because of the side charger, otherwise you couldn't use the charging handle. |
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Posted: 7/28/2018 8:12:10 PM EDT
[#22]
Quote HistoryQuoted: You're only down $20ish right? I only went this route because of the side charger, otherwise you couldn't use the charging handle.
I didn't get in on the PA BCA side charging deal so I'll stick with the amazon stock until I get one. Still poking around for a quadrant sight. |
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Posted: 7/28/2018 10:17:19 PM EDT
[#23]
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG It's fucking badass. Well done! |
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Posted: 7/28/2018 11:06:41 PM EDT
[#24]
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG
I’ll be standing by for an AAR. Curious about what spring strength etc. that you end up happiest with (what you have now, heavier, etc.). |
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Posted: 7/28/2018 11:31:45 PM EDT
[#25]
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Posted: 7/29/2018 12:46:37 AM EDT
[#26]
Quote HistoryQuoted:
Sweet
I’ll be standing by for an AAR. Curious about what spring strength etc. that you end up happiest with (what you have now, heavier, etc.). Quote HistoryQuoted:
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG
I’ll be standing by for an AAR. Curious about what spring strength etc. that you end up happiest with (what you have now, heavier, etc.). |
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Posted: 7/29/2018 12:54:23 AM EDT
[#27]
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Amazon stock and side charger. https://www.AR15.Com/media/mediaFiles/44438/9C967D76-4FB7-4E4E-83C0-64D6360829D0-622493.JPG
For those of you who want to aim, but don't want to deal with the inverted stock, I was pondering something like this with an M203 leaf sight at the end. It should get you out to about 40º which is what I found works best for distance. This will definitely clear the tube and get pretty close to the end of it. You will have to shoot with the stock under your shoulder though. 
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Posted: 7/29/2018 2:17:54 AM EDT
[#28]
Quote HistoryQuoted:
Looks familiar!
For those of you who want to aim, but don't want to deal with the inverted stock, I was pondering something like this with an M203 leaf sight at the end. It should get you out to about 40º which is what I found works best for distance. This will definitely clear the tube and get pretty close to the end of it. You will have to shoot with the stock under your shoulder though. https://images-na.ssl-images-amazon.com/images/I/41VvKEg30-L.jpg Quote HistoryQuoted:
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Amazon stock and side charger. https://www.AR15.Com/media/mediaFiles/44438/9C967D76-4FB7-4E4E-83C0-64D6360829D0-622493.JPG
For those of you who want to aim, but don't want to deal with the inverted stock, I was pondering something like this with an M203 leaf sight at the end. It should get you out to about 40º which is what I found works best for distance. This will definitely clear the tube and get pretty close to the end of it. You will have to shoot with the stock under your shoulder though. https://images-na.ssl-images-amazon.com/images/I/41VvKEg30-L.jpg  https://www.amazon.com/Lion-Gears-BM3010EX-Shooters-Bridgemount/dp/B00MNLF49Q?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ipad-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00MNLF49Q |
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Posted: 7/29/2018 3:24:29 AM EDT
[#29]
Quote HistoryQuote HistoryQuoted:
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Amazon stock and side charger. https://www.AR15.Com/media/mediaFiles/44438/9C967D76-4FB7-4E4E-83C0-64D6360829D0-622493.JPG
For those of you who want to aim, but don't want to deal with the inverted stock, I was pondering something like this with an M203 leaf sight at the end. It should get you out to about 40º which is what I found works best for distance. This will definitely clear the tube and get pretty close to the end of it. You will have to shoot with the stock under your shoulder though. https://images-na.ssl-images-amazon.com/images/I/41VvKEg30-L.jpg https://www.amazon.com/Lion-Gears-BM3010EX-Shooters-Bridgemount/dp/B00MNLF49Q?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ipad-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00MNLF49Q You could also fab this to mount your mortar bipod to BTW. |
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Posted: 7/29/2018 3:54:21 AM EDT
[#30]
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Yeah, it's a cheesy gun part, but that's what makes this stuff fun. It's liberating in a way to have a gun project where you get to peruse the bubba parts and make something useful out of them. You could also fab this to mount your mortar bipod to BTW. Quote HistoryQuoted:
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Amazon stock and side charger. https://www.AR15.Com/media/mediaFiles/44438/9C967D76-4FB7-4E4E-83C0-64D6360829D0-622493.JPG
For those of you who want to aim, but don't want to deal with the inverted stock, I was pondering something like this with an M203 leaf sight at the end. It should get you out to about 40º which is what I found works best for distance. This will definitely clear the tube and get pretty close to the end of it. You will have to shoot with the stock under your shoulder though. https://images-na.ssl-images-amazon.com/images/I/41VvKEg30-L.jpg https://www.amazon.com/Lion-Gears-BM3010EX-Shooters-Bridgemount/dp/B00MNLF49Q?SubscriptionId=AKIAILSHYYTFIVPWUY6Q&tag=duckduckgo-ipad-20&linkCode=xm2&camp=2025&creative=165953&creativeASIN=B00MNLF49Q You could also fab this to mount your mortar bipod to BTW. 
I started to post one about a week ago, but the extended rail I found wasn’t long enough, and I was too lazy to search more. You found one though, so I put up a link.
ETA: I’m torn on the mortar project. I can make the russian set I have work, but I have to cut it up (more than I thought I would) to get there. I’m looking at other stuff first for a while. I hate ruining real things if they aren’t exceptionally common. |
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Posted: 7/29/2018 11:22:48 AM EDT
[#31]
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG Which stock/brace is that? |
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Posted: 7/29/2018 12:20:49 PM EDT
[#32]
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Looks great! Which stock/brace is that? Quote HistoryQuoted:
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Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG Which stock/brace is that? |
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Posted: 7/29/2018 4:37:00 PM EDT
[#33]
Quote HistoryQuoted: It's the mission first tactical minimalist stock. The buffer tube is cut back and a spring is behind it so that it absorbs recoil. 
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Posted: 7/29/2018 6:40:33 PM EDT
[#34]
Quote HistoryQuoted:
Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG |
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Posted: 7/29/2018 6:58:55 PM EDT
[#35]
Quote HistoryQuoted: I must of missed why u all are making ur stock point up? 
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Posted: 7/29/2018 7:54:29 PM EDT
[#36]
Somebody should chrono the difference between the regular and extended tubes.
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Posted: 7/29/2018 9:18:52 PM EDT
[#37]
Quote HistoryQuoted:
I must of missed why u all are making ur stock point up? Quote HistoryQuoted:
Quoted:
Booyah. This thing is actually pretty fucking cool now! https://www.AR15.Com/media/mediaFiles/75400/EA8A99E3-85B2-4471-A0F1-BAC244471CEA-622162.JPG Took it out today. The stock worked great. A couple of home made can configurations worked good too. AAR coming at some point tonight.  Attached File |
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Posted: 7/29/2018 10:08:25 PM EDT
[#38]
Cool, standing by for details.
I stopped in Lowes to look for tail stuff. Didn’t find a lot, but one possibility. A 1” threaded pvc connection fits almost snug on a 16oz budweiser cap. So I got a 1” threaded-to-3/4” slip fit adapter and some 3/4” pvc pipe. I still need some flat pvc for the fins (they didn’t have it at Walmart or Lowes). I’ll have to order it I’ll epoxy the budweiser cap into the pvc adapter, slot the 3/4” pipe for fins, and glue fins in when I can make them from sheet. It takes two silicone bands to snug the bud bottles in the launch tube. I’ll have to find some thicker bands.  Attached File |
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Posted: 7/29/2018 10:25:12 PM EDT
[#39]
Quote HistoryQuoted:
Somebody should chrono the difference between the regular and extended tubes. |
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Posted: 7/29/2018 10:26:48 PM EDT
[#40]
I took a Coors bottle shaped can, dumped the "beer" and refilled it with a 3x expanding spray foam - the intent was to lighten and stiffen it so my son can shoot it more comfortably.
"Worked" sorta. Can/foam was of course very light so it had near zero recoil. Didn't travel very far - like 30 yards. After the first shot (pointy end loaded down), it collapsed a bit on itself uniformly, like it was in a vacuum. Held its shape well enough for about 10 more shots before it tore enough to expose the foam and we switched out for another one. Best part was, it was great for nailing targets at fairly close range without much risk to the target, can or shooter. Son even suggested we get the welding helmets on and have a "nerf" war.
Gonna try it again, but first weighting the bottom of the can with sand or similar ballast, then the foam. Hopefully can dial in the right ratio of mass to recoil to get some range back while still pleasant enough for mini-me to blast away. |
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Posted: 7/30/2018 1:18:47 AM EDT
[#41]
Pics to be uploaded from my phone, as my computer is not recognizing file size adjustments. 3MB is too fucking small of a limit.
OK all, here is my findings for today. First: my inverted spring loaded stock worked GREAT for my shoulder. It took the recoil down to where I wasn't aware of it in my shoulder area. The only drawback was that I was now getting a nice jolt in the wrist due to rapid backwards movement. But it was not as jarring as the steel stock was. I call it a win so far. I am thinking about getting something like an automotive valve spring. About can "loads." I didn't have a super heavy loadout. just 24 8 oz cans, 10 of the coors bottles in the green paint, and 6 of the 8 oz cans glued to empty 12 oz cans. One of these cans I made some hasty fins with a utility knife. This was for the LULZ, but it turned out to be pretty good. I'll get to that later. First, the 8 oz can, tab in performs the best as always. It gets the most distance, and seems to land within 10' of the same spot each time. Not too shabbty. Today I was getting about 115-120 yards with the barrel aimed at approximately 40º Here's a iPotato pic for distance reference. This is from the impact zone to the table I was shooting next to.  Attached FileSecond: the 8oz cans glued to empties. I was very impressed with this setup, and I would recommend it for anyone looking to try and stabilize the can for accuracy. It performed exactly as I had imagined it would. Distance seemed to be slightly less than running bare, and I think it's because it's changing trajectory in flight as the heavy part of the load spins to move forward.  Can launcher test. Here's pics of it happening as I anticipated.  Attached File Attached File Attached FileThird: The Coors cans are a cool looking dud when filled with water. They didn't make it too far, and that was disappointing. Emptying it out a bit produced good distance, but it was very erratic—changing flight angles mid flight. Forth: the single finned can load. Because of @Desert-AIP, I made this. I thought it would be a bust, but it was not!  Shasta Blasta 7/29/18  Attached FileFifth. I have gained some weight since I last took a gun video. I'm thinking it's all these Coors.
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Posted: 7/30/2018 8:42:41 AM EDT
[#42]
Quote HistoryQuoted:
Pics to be uploaded from my phone, as my computer is not recognizing file size adjustments. 3MB is too fucking small of a limit. OK all, here is my findings for today. First: my inverted spring loaded stock worked GREAT for my shoulder. It took the recoil down to where I wasn't aware of it in my shoulder area. The only drawback was that I was now getting a nice jolt in the wrist due to rapid backwards movement. But it was not as jarring as the steel stock was. I call it a win so far. I am thinking about getting something like an automotive valve spring. About can "loads." I didn't have a super heavy loadout. just 24 8 oz cans, 10 of the coors bottles in the green paint, and 6 of the 8 oz cans glued to empty 12 oz cans. One of these cans I made some hasty fins with a utility knife. This was for the LULZ, but it turned out to be pretty good. I'll get to that later. First, the 8 oz can, tab in performs the best as always. It gets the most distance, and seems to land within 10' of the same spot each time. Not too shabbty. Today I was getting about 115-120 yards with the barrel aimed at approximately 40º Here's a iPotato pic for distance reference. This is from the impact zone to the table I was shooting next to. https://www.AR15.Com/media/mediaFiles/75400/Impact_area-623630.JPG Second: the 8oz cans glued to empties. I was very impressed with this setup, and I would recommend it for anyone looking to try and stabilize the can for accuracy. It performed exactly as I had imagined it would. Distance seemed to be slightly less than running bare, and I think it's because it's changing trajectory in flight as the heavy part of the load spins to move forward. https://www.youtube.com/watch?v=3KrUX05rCGI
Here's pics of it happening as I anticipated. https://www.AR15.Com/media/mediaFiles/75400/FC614C5E-C46B-4C7C-87B2-B82A1928E076-623622.JPG https://www.AR15.Com/media/mediaFiles/75400/AE5606C7-1133-4940-9851-2C0ED1E93C77-623624.JPGhttps://www.AR15.Com/media/mediaFiles/75400/56D931F5-D93C-4C09-8B76-017D817A8AF2-623628.JPG Third: The Coors cans are a cool looking dud when filled with water. They didn't make it too far, and that was disappointing. Emptying it out a bit produced good distance, but it was very erratic—changing flight angles mid flight. Forth: the single finned can load. Because of @Desert-AIP, I made this. I thought it would be a bust, but it was not! https://www.youtube.com/watch?v=oCNahOgullU
https://www.AR15.Com/media/mediaFiles/75400/Fins-623621.JPG Fifth. I have gained some weight since I last took a gun video. I'm thinking it's all these Coors.
We badly need longer barrels for more projectile experimenting. If I don’t hear from Jeff at F5 in the next couple days I’ll give him a holler and see if he can do anything. |
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Posted: 7/30/2018 10:56:35 AM EDT
[#43]
theres a sweetspot in barrel length where the increasing drag starts to cause issues
me at home depot and lowes test fitting parts, can i help you? nope
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Posted: 7/30/2018 11:45:04 AM EDT
[#44]
Quote HistoryQuoted:
theres a sweetspot in barrel length where the increasing drag starts to cause issues me at home depot and lowes test fitting parts, can i help you? nope 
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Posted: 7/30/2018 12:07:53 PM EDT
[#45]
http://sipseystreetirregulars.blogspot.com/2011/06/praxis-practice-rifle-grenades-surplus.html |
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Posted: 7/30/2018 12:12:45 PM EDT
[#46]
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Posted: 7/30/2018 12:30:07 PM EDT
[#47]
pipe pigs |
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Posted: 7/30/2018 12:31:18 PM EDT
[#48]
last year, in a now-deleted video "the king of random" made some silly potato gun, and 3d printed projectiles.
Projectile was hollow, filled with black powder, and a primer inside right behind the nose, which had a small opening for a nail to protrude. Nail impacts target, sets of primer, sets off black powder, makes a nice white smoke show. What was the ATF limit on explosives again? |
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Posted: 7/30/2018 12:34:10 PM EDT
[#49]
Quote HistoryQuoted:
last year, in a now-deleted video "the king of random" made some silly potato gun, and 3d printed projectiles. https://i.pinimg.com/originals/07/cd/6c/07cd6ce22eede69e2ff94068d7eb75d3.jpg Projectile was hollow, filled with black powder, and a primer inside right behind the nose, which had a small opening for a nail to protrude. Nail impacts target, sets of primer, sets off black powder, makes a nice white smoke show. What was the ATF limit on explosives again? |
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Posted: 7/30/2018 12:58:55 PM EDT
[#50]
Quote HistoryQuoted:
theres a sweetspot in barrel length where the increasing drag starts to cause issues me at home depot and lowes test fitting parts, can i help you? nope If you (Variable556) find out about longer tubes let me know? I think 20" is what I'd like to try out. I am also going to start scoping out the mexican/asian groceries for oddball sodas in steel cans. That alone will be a game changer regarding how much pressure they can take. |
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