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Posted: 7/8/2014 11:08:44 AM EDT
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Been lurking for quite some time, soaking up as much information as I can.
I am going to build a 14.5 with BCM Mod 1, pinned and welded because I like the SBR look. I have just ordered a few parts. My first was a Magpul Texas Edition PMAG... 
Yesterday, I ordered an Aero Precision upper/lower combo in FDE with upper parts kit installed. I also ordered a BCM Gunfighter Grip Mod 3 and Magpul Trigger guard in FDE. Here is my proposed parts list. I want to keep this rifle LIGHT and on the cheaper end of "high-end". Aero Precision Upper/Lower Combo with Upper Parts Stag Lower Parts Kit Magpul MOE Trigger Guard KNS Anti Rotational Pins (.154 GEN 2) BCM Gunfighter Mod 3 Rainier Arms Milspec Buffer Tube Kit Noveske QD End Plate Magpul CTR BCM Bolt Carrier Group Full Auto Rainier Arms Raptor Ambidextrous Charging Handle BCM BFH 14.5" Mid Length (Lightweight) Barrel SLR Rifleworks Sentry 6 Premium Adjustable Gas Block Black Nitrite Mid Length Gas Tube BCM Compensator MOD 1 - 5.56 SLR Rifleworks 14" M-LOK Solo Lite Handguard I'm open to opinion and suggestion. I know one of the areas of potential contention will be the SLR Rifleworks Adjustable Gas Block. They're pricey, but hearing things about built rifles being over-gassed / under-gassed, I'd like to be able to dial that in. Plus, I can take it apart without removing it from the barrel to thoroughly clean it. |
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Trigger? Would recommend anything Gisselle, ALG triggers, etc. No flaming here for the adjustable gas block, but normally I'd put it on a carbine length... i think you'll find a mid-length will be pretty much middle of the road as far as adjustments. Quoted:
Trigger? Would recommend anything Gisselle, ALG triggers, etc. No flaming here for the adjustable gas block, but normally I'd put it on a carbine length... i think you'll find a mid-length will be pretty much middle of the road as far as adjustments. Cool. For some reason I've got visions of grandeur about a SUPER soft hitting and flat firing AR... Not like 5.56 is much in the first place. For now, I am looking at just polishing up the standard trigger, but I've got my eye on a CMC... Quoted:
Everything looks good. That barrel may not hold up to extended firing sessions accuracy wise due to heat. You could save some money and get the MOE stock, the fit is very good and only wobbles about 1/8 inch left and right. What optics and iron sights? I haven't decided on optics or irons yet. I like the Magpul Pro's and Troy's... As much as I'd like an Aimpoint, I think I will stick with a Vortex or something of the sort for now... Still haven't made up my mind. Thanks for the suggestion on the MOE stock... I'll consider it. |
| Looks like a real nice build. I have a BCM 14.5" middy with the same comp and a H2 buffer and it shoots very soft. My friends is similar but with a heavy barrel and an extended A2 and it's on the soft side too. Take that as you will. I used the ALG coated mil spec trigger and it is a nice crisp mil spec trigger for not too much money when talking triggers. |
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Quoted:Cool. For some reason I've got visions of grandeur about a SUPER soft hitting and flat firing AR... Not like 5.56 is much in the first place. For now, I am looking at just polishing up the standard trigger, but I've got my eye on a CMC... Save yourself the headache now and just jump on the CMC trigger. I've got the 3.5# curved and it's perfect. |
| Get the CMC..you won't regret it.I have the CMC 3.5 flat trigger and that thing is awesome!Or if you want to save money polish the mil-spec trigger and put JP's reduced trigger spring kit and have a 4.5lb trigger for $20 or less...that is what I did on another one of my AR's and it's decent. |
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You guys have a way of talking me into spending more money...
Looking at doing an LPK w/o trigger and drop the KNS pins since the CMC comes with their own anti-walk pins and I could put $70 toward the CMC... I'll throw it into my "Rifle Spreadheet"
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You will not be over-gassed with that barrel. You have not chosen a low mass BCG or anything, so that gas block will likely be wide open, especially if you shoot any lower powered ammo. That's good to know... That could save me even more if I just went with a standard gas block. I was gonna throw a standard H buffer in there, but I just heard H2 from of you guys... What do you guys think? I'll probably end up getting both and seeing what's what on the range. |
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I run H buffers and X Power springs in my 14.5 midlength rifles. H2s can cause a short stroke if low power ammo is used. It is not the case with everyone. I do it because I have experienced it with 2 different barrels. If you use full power 5.56 ammo, you can run an H2 all day.
I had some shitty Tula I wanted to finish off from the bottom of the ammo fort, and even with the H in my BCM, it was touch and go. A couple of short strokes. |
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You will not be over-gassed with that barrel. You have not chosen a low mass BCG or anything, so that gas block will likely be wide open, especially if you shoot any lower powered ammo. I would open it up 4 clicks and go from there if it was me. I do not think it will need to be wide open to be tuned properly. |
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I would open it up 4 clicks and go from there if it was me. I do not think it will need to be wide open to be tuned properly. Quoted:
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You will not be over-gassed with that barrel. You have not chosen a low mass BCG or anything, so that gas block will likely be wide open, especially if you shoot any lower powered ammo. I would open it up 4 clicks and go from there if it was me. I do not think it will need to be wide open to be tuned properly. Tuning directions for adjustable are normally as follows: Close the gas port, then open 1 full turn. Load and fire one round. If the bolt doesn't lock back, open 1/4 turn. Load and fire one round while adjusting the gas block in between shots until you get one to lock back. Load and fire one round 3 times. Bolt should reliably lock back each time. For a wide variety of ammo, open 1/2 to a full turn more. For very specific ammo (reloads, always shooting the same brand, etc), open 1/4 turn more. Make sense? OP, in my mind, you'd be better served buying an H and an H3 buffer, and tuning the gas that way. IMO, an adjustable block is normally good on a carbine length, questionable on a mid length, and downright stupid on a rifle length for normal .223/5.56 rounds. |
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Quoted:OP, in my mind, you'd be better served buying an H and an H3 buffer, and tuning the gas that way. IMO, an adjustable block is normally good on a carbine length, questionable on a mid length, and downright stupid on a rifle length for normal .223/5.56 rounds. Quoted:OP, in my mind, you'd be better served buying an H and an H3 buffer, and tuning the gas that way. IMO, an adjustable block is normally good on a carbine length, questionable on a mid length, and downright stupid on a rifle length for normal .223/5.56 rounds. I think I'm being talked into this route... more cash for a CMC trigger... Quoted:
Also, check out red barn armory's build your own LPK... I got a hell of a deal on all the parts I wanted and didn't have any extras at all. http://www.redbarnarmory.com/RBA-Build-your-own-LPK-p/rbalpkcustom.htm Oh, cool... Thanks for the link man. I think Brownell's sells an LPK sans trigger for $30. That's about the cheapest I've found... |
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So I think I've talked myself into running a 16" barrel instead of a 14.5" pinned and welded. I would like to do this because I'm uncertain of the gas block I want to run. I think I am going to save some money currently, and run a standard gas block instead of the adjustable and then tinker with the adjustable later on down the road. All this so I don't have to drill off the comp...
I've also decided to go with a CMC trigger and I've ordered only the few remaining lower parts individually from DSG Arms since I'm gonna run the BAD-ASS levers, Seekins bolt catch, and already have the pins. Receivers should be here on Wednesday, so I will at least be able to put a few things together to tide me over til' I can order some of the more expensive parts. Is there any reasonable advantage to the 14.5 aside from the 1" length saved? I figure I will get better velocity anyway with the 16". |
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Just got the receivers in and transferred. Couldn't wait to get all the parts I had installed...
http://i115.photobucket.com/albums/n306/exgratiaiii/Mobile%20Uploads/IMG_20140723_221111_zpsksks6pjk.jpg http://i115.photobucket.com/albums/n306/exgratiaiii/Mobile%20Uploads/IMG_20140723_224424_zps9frsp3gu.jpg I decided to shave the Magpul trigger guard instead of the BCM grip where they interfere. Didn't have to take much off... One thing that was irritating, the setscrew that came with the trigger guard stripped out, and I ended up having to back it out with some needle nose vise grips. I might try threading it slightly, and then use a button head screw. Planning to source the trigger and selector next... |
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Looks like you're headed down a good path. If you're interested, the mag release from Spikes will match that bolt catch too. I also believe that Seekins? has the same one with a slightly different finish.
I am also fond of the raptor charging handle from rainier. Below are a few pictures if you're curious what all of the above mentioned looks like on the FDE aero metal. Sorry for the shaky picture quality, I had just gotten up for the day and hadn't really woke up just yet. I was excited to see that someone was going with the FDE metal and the black parts kits. Also, if you're in Austin shoot me a PM and we can get together if you want. http://i1273.photobucket.com/albums/y417/berdisevan/AR15%20build%202014/554c4ee0-7188-4a20-b515-841e81210e7a_zps91250220.jpg http://i1273.photobucket.com/albums/y417/berdisevan/AR15%20build%202014/20140724_073348_zps2c90a7e7.jpg http://i1273.photobucket.com/albums/y417/berdisevan/AR15%20build%202014/20140724_073416_zps0c70cbd3.jpg |
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Looks like you're headed down a good path. If you're interested, the mag release from Spikes will match that bolt catch too. I also believe that Seekins? has the same one with a slightly different finish. I am also fond of the raptor charging handle from rainier. Below are a few pictures if you're curious what all of the above mentioned looks like on the FDE aero metal. Sorry for the shaky picture quality, I had just gotten up for the day and hadn't really woke up just yet. I was excited to see that someone was going with the FDE metal and the black parts kits. Also, if you're in Austin shoot me a PM and we can get together if you want. Haha, that's awesome. I really like the look. I thought about the Seekins button, but in aluminum, it just didn't have the same look as the steel bolt catch. I dunno... It's a cheap adjustment. I am in San Antonio, so I'm close. Once I get to the upper, I was looking for a group or whatever that might've liked to share tools and such... |
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Glad I was talked into a high-end trigger...
http://i115.photobucket.com/albums/n306/exgratiaiii/Mobile%20Uploads/IMG_20140809_152046_zpsgquai6ia.jpg Got my barrel in over the weekend too. I went with a Daniel Defense instead of the BCM because I found a killer deal on it. Should get a lot more of my parts in this week, including my cerakoted SLR Solo Lite HG
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Made some progress tonight...
http://i115.photobucket.com/albums/n306/exgratiaiii/Mobile%20Uploads/IMG_20140813_231946_zpsyemrqpn6.jpg Receiver tube and stock are on with an IWC plate and staked. Got the barrel dimpled and test fit the gas block. Just waiting on the handguard, and I'm done...ish. |
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That looks very nice. For the dot I'd suggest you look at the Primary Arms version. I personally prefer the knob for illumination on/off and brightness levels vs the Vortex style buttons on the SPARC. Unless you want to go straight to an Aimpoint Micro, of course. Posted Via AR15.Com Mobile |
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That is a nice looking gun, sir.  Quoted:
That is a nice looking gun, sir. Quoted:
That looks very nice. For the dot I'd suggest you look at the Primary Arms version. I personally prefer the knob for illumination on/off and brightness levels vs the Vortex style buttons on the SPARC. Unless you want to go straight to an Aimpoint Micro, of course. Thanks guys. I've had my eye on the Aimpoint PRO, actually... Gonna be a while, however, til' I'm able to recover from this and save up for the optic... Should, however, help me get my iron sight skills up to where they need be... |
| Man, that thing looks KILLER.. I love the cerakoted alum parts instead of the plastic being fde because the plastic colors between different companies differ and that drives me nuts. I have trouble looking at a tan SCAR because of all the different hues of beige LOL OCD. Good work, man. |
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Thanks guys.
Tree on an AFG with Magpul's new M-LOK adapter.. I like the system, VERY easy to use. http://i115.photobucket.com/albums/n306/exgratiaiii/Mobile%20Uploads/IMG_20140819_221055090_zpsdn4lluxc.jpg |
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