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[ARCHIVED THREAD] - Titanium BCG (Page 5 of 5)
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Our new 6AL4V Titanium carrier has some awesome features which we are in the process of getting a patent on. So I can't say much right now, but with this new carrier you don't need to use an adjustable gas system, heavier buffer, or a heavier buffer spring, even with the reduced weight. Just drop it in place and start shooting. Also our carrier has a Tool Steel sleeve inside the bore for added durability. It's done the same exact way that steel sleeves are put into Aluminum race engine blocks. They are also Hard Anodized Grey and infused with Teflon for wear resistance. Here's the prototypes (made for our shooting team) these don't have the patented features shown. :-) <a href="http://s135.photobucket.com/user/badazzar15/media/Intake/0E9F4D25-AFA1-44AB-BD38-78F7AC5239A6_zpsqhzw64p0.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/Intake/0E9F4D25-AFA1-44AB-BD38-78F7AC5239A6_zpsqhzw64p0.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/5F389912-9C1D-4C65-8B02-4CC676555BE4_zpsuyolvsyd.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/5F389912-9C1D-4C65-8B02-4CC676555BE4_zpsuyolvsyd.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/10CE2F10-5A53-4F6A-B109-FE05E8D60237_zpsyac19s6k.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/10CE2F10-5A53-4F6A-B109-FE05E8D60237_zpsyac19s6k.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/D38FC5F9-1A72-4322-9294-F91C97EC0CF5_zpsoqnl5iv0.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/D38FC5F9-1A72-4322-9294-F91C97EC0CF5_zpsoqnl5iv0.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/0309EDBB-BB2B-4314-800B-7F148F6FE4F2_zps3tgfbzwb.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/0309EDBB-BB2B-4314-800B-7F148F6FE4F2_zps3tgfbzwb.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/204004F8-C9A2-4B05-841D-A7A9A2074CAE_zpslgfrhsxu.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/204004F8-C9A2-4B05-841D-A7A9A2074CAE_zpslgfrhsxu.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/B6ACC48D-A976-4107-9199-D2F72DE5DD86_zpsbc46scvr.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/B6ACC48D-A976-4107-9199-D2F72DE5DD86_zpsbc46scvr.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/1FBD3C20-6683-4D9E-AF61-0C57EF24FE96_zps80wi9koo.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/1FBD3C20-6683-4D9E-AF61-0C57EF24FE96_zps80wi9koo.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/AB992B41-9473-4C6F-812E-E430D3EBB2FD_zpsrtjhutig.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/AB992B41-9473-4C6F-812E-E430D3EBB2FD_zpsrtjhutig.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/CC3C72BB-1216-4AD3-BA7A-635F10AEB780_zpsukgvtiii.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/CC3C72BB-1216-4AD3-BA7A-635F10AEB780_zpsukgvtiii.jpg</a> <a href="http://s135.photobucket.com/user/badazzar15/media/9178E091-C84B-47E8-B8A0-5409FBB4EC3F_zpstxgcsdhn.jpg.html" target="_blank">http://i135.photobucket.com/albums/q160/badazzar15/9178E091-C84B-47E8-B8A0-5409FBB4EC3F_zpstxgcsdhn.jpg</a> You have selected the wrong grade titanium for this. 6AL-4V is a soft surgical grade intended for use in manufacturing implantable devices. It has very poor wear resistance. You might as well use aluminum. |
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goood question... Quoted:
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Depending on timing, I will probably get a St. Croix or a Boomfab. I have a delrin buffer system I was hopeful would work with Spike's system and a adjustable gas block. If the Ti BCG won't work with just an adjustable gas block, I may also try an adjustable gas key. Just doing some experimentation. Of course, one manufacturer I was discussing Ti bolt carriers with suggested once you sleeve the BCG, as Tom was proposing, then why not go aluminium. Unless of course you don't want it that light. goood question... Even though I've never had an issue with it on my aluminum carrier, I've seen concerns voiced about the cam pin slot wearing. Sleeving wouldn't address that. One thing I've considered is a "Hybrid" carrier of a steel front and aluminum rear. Keep in mind if someone wants to get real busy with a Bridgeport you could in all probability get a titanium carrier down to the weight of an aluminum carrier. Smith Enterprises Aluminum Carrier - 3.85 ounces 
Progressive Machine & Tool Titanium Carrier - 5.10 ounces 
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Even though I've never had an issue with it on my aluminum carrier, I've seen concerns voiced about the cam pin slot wearing. Sleeving wouldn't address that. One thing I've considered is a "Hybrid" carrier of a steel front and aluminum rear. Keep in mind if someone wants to get real busy with a Bridgeport you could in all probability get a titanium carrier down to the weight of an aluminum carrier. Smith Enterprises Aluminum Carrier - 3.85 ounces http://i135.photobucket.com/albums/q125/PursuitSS/Picture002.jpg Progressive Machine & Tool Titanium Carrier - 5.10 ounces http://i135.photobucket.com/albums/q125/PursuitSS/DSC01359.jpg Quoted:
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Depending on timing, I will probably get a St. Croix or a Boomfab. I have a delrin buffer system I was hopeful would work with Spike's system and a adjustable gas block. If the Ti BCG won't work with just an adjustable gas block, I may also try an adjustable gas key. Just doing some experimentation. Of course, one manufacturer I was discussing Ti bolt carriers with suggested once you sleeve the BCG, as Tom was proposing, then why not go aluminium. Unless of course you don't want it that light. goood question... Even though I've never had an issue with it on my aluminum carrier, I've seen concerns voiced about the cam pin slot wearing. Sleeving wouldn't address that. One thing I've considered is a "Hybrid" carrier of a steel front and aluminum rear. Keep in mind if someone wants to get real busy with a Bridgeport you could in all probability get a titanium carrier down to the weight of an aluminum carrier. Smith Enterprises Aluminum Carrier - 3.85 ounces http://i135.photobucket.com/albums/q125/PursuitSS/Picture002.jpg Progressive Machine & Tool Titanium Carrier - 5.10 ounces http://i135.photobucket.com/albums/q125/PursuitSS/DSC01359.jpg can either of those carrier be bought now? |
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can either of those carrier be bought now? Quoted:
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Depending on timing, I will probably get a St. Croix or a Boomfab. I have a delrin buffer system I was hopeful would work with Spike's system and a adjustable gas block. If the Ti BCG won't work with just an adjustable gas block, I may also try an adjustable gas key. Just doing some experimentation. Of course, one manufacturer I was discussing Ti bolt carriers with suggested once you sleeve the BCG, as Tom was proposing, then why not go aluminium. Unless of course you don't want it that light. goood question... Even though I've never had an issue with it on my aluminum carrier, I've seen concerns voiced about the cam pin slot wearing. Sleeving wouldn't address that. One thing I've considered is a "Hybrid" carrier of a steel front and aluminum rear. Keep in mind if someone wants to get real busy with a Bridgeport you could in all probability get a titanium carrier down to the weight of an aluminum carrier. Smith Enterprises Aluminum Carrier - 3.85 ounces http://i135.photobucket.com/albums/q125/PursuitSS/Picture002.jpg Progressive Machine & Tool Titanium Carrier - 5.10 ounces http://i135.photobucket.com/albums/q125/PursuitSS/DSC01359.jpg can either of those carrier be bought now? The Smith Enterprises Aluminum Carrier has been out of production almost thirty years. The Progressive Machine & Tool Titanium Carrier has been out of production about four years. |
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Not sure if this one has been mentioned.
http://www.stcroixtactical.com/collections/ar15/products/sct-titanium-bolt-carrier-group-ar15-m16 |
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Not sure if this one has been mentioned. http://www.stcroixtactical.com/collections/ar15/products/sct-titanium-bolt-carrier-group-ar15-m16 It could be made lighter with a Bridgeport 
I think I'll wait for Tom though. |
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It could be made lighter with a Bridgeport
I think I'll wait for Tom though. Quoted:
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Not sure if this one has been mentioned. http://www.stcroixtactical.com/collections/ar15/products/sct-titanium-bolt-carrier-group-ar15-m16 It could be made lighter with a Bridgeport
I think I'll wait for Tom though. in the now 8 page lightweight parts list thread, that carrier and anothe one that seems identical w/a different logo is mentioned. Shit is tarded. Skeletonize that bitch while you are at it. I mean if you are going to do it then do it. |
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You have selected the wrong grade titanium for this. 6AL-4V is a soft surgical grade intended for use in manufacturing implantable devices. It has very poor wear resistance. You might as well use aluminum. Quoted:
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Our new 6AL4V Titanium carrier has some awesome features which we are in the process of getting a patent on. So I can't say much right now, but with this new carrier you don't need to use an adjustable gas system, heavier buffer, or a heavier buffer spring, even with the reduced weight. Just drop it in place and start shooting. Also our carrier has a Tool Steel sleeve inside the bore for added durability. It's done the same exact way that steel sleeves are put into Aluminum race engine blocks. They are also Hard Anodized Grey and infused with Teflon for wear resistance. You have selected the wrong grade titanium for this. 6AL-4V is a soft surgical grade intended for use in manufacturing implantable devices. It has very poor wear resistance. You might as well use aluminum. I don't think so. 6-4 is hardly a soft alloy. But you are right on one thing about its use in medical implants, like joint replacements. But its only a small segment of what its used for. 6-4 has a room temp yield strength of about 140 ksi. A good bit stronger than the receiver steel in most bolt rifles. Rockwell hardness is up there pretty high, but most aero and industrial specs for titanium don't call out a specified hardness range. it eats carbide cutter tools for breakfast, especially if you're dumb enough not to use coolant. It is used for armor plating on military vehicles and limos. Aircraft skins like the F-22 wing and fuse. Its used for the main rotor hub on the UH-60 blackhawk. Its plenty strong for this application, and it looks like they have taken steps to mitigate its propensity to gaul when in contact with itself. |
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Yes it's outrageous on price, but when you consider it cuts OVER a quarter of a pound off of the weight, that is significant weight savings! With all of the lightweight parts coming to market we are approaching the mythical Three pound AR. I presume the boomfab will definitely necessitate an adj gas system yes? |
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Yes it's outrageous on price, but when you consider it cuts OVER a quarter of a pound off of the weight, that is significant weight savings! With all of the lightweight parts coming to market we are approaching the mythical Three pound AR. Skeletonized 7068 with a steel sleeve is what I'm imagining. And a barrel that would make even the lightest profile available today seem heavy. Now I just need orders to a state that will let me build it. |
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Skeletonized 7068 with a steel sleeve is what I'm imagining. And a barrel that would make even the lightest profile available today seem heavy. Now I just need orders to a state that will let me build it. Quoted:
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Yes it's outrageous on price, but when you consider it cuts OVER a quarter of a pound off of the weight, that is significant weight savings! With all of the lightweight parts coming to market we are approaching the mythical Three pound AR. Skeletonized 7068 with a steel sleeve is what I'm imagining. And a barrel that would make even the lightest profile available today seem heavy. Now I just need orders to a state that will let me build it. Somehow figure out how to get a transfer to Missouri, pretty much everything goes and we have a law in progress stating that Federal laws cannot infringe on our 2nd Amendment RIGHTS. Of course our asshole Governor is going to veto it but the Republicans have a Super Majority here and should be able to override him
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Yes it's outrageous on price, but when you consider it cuts OVER a quarter of a pound off of the weight, that is significant weight savings! With all of the lightweight parts coming to market we are approaching the mythical Three pound AR. Mine will be about 3.7lbs when done. 10" SBR, so slightly different than 16" builds. |
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Mine will be about 3.7lbs when done. 10" SBR, so slightly different than 16" builds. Quoted:
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Yes it's outrageous on price, but when you consider it cuts OVER a quarter of a pound off of the weight, that is significant weight savings! With all of the lightweight parts coming to market we are approaching the mythical Three pound AR. Mine will be about 3.7lbs when done. 10" SBR, so slightly different than 16" builds. details?? |
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details?? Potato Picture incoming... Waiting for SBR papers so currently I have my upper on a pistol lower, with regular weight and heavy (SB15) parts. Light Weight lower is paired with a 16" barreled upper. 
I am using AccuGroup poly parts for FCG, Pins, etc. I also have a extremely light weight delrin buffer I am using in these weights, but the entire system is yet untested. I plan to use a Ti BCG, I was hoping for Spikes - I may go with a St. Croix or Boomfab for now. A key to spike's was going to be the idea that it could be used without an adjustable gas block - Tom was not able to disclose what mechanics are involved, but if true my combination of adjustable gas block, lightweight Ti BCG and extremely light weight Delrin buffer may all work together. This is experimental, some parts may have to be swapped to get everything working in harmony, and I just may not like the feel/performance of others - such as some of the polymer parts. 
Would love input on other parts, etc. |
No need for a adjustable gas block. I am using one of these. Adjustable gas key
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No need for a adjustable gas block. I am using one of these. Adjustable gas key https://www.rubbercityarmory.com/ProdImages/adj_gas_key.jpg I did see those. I think the SLR gas block is very nice and very light weight, and I think the adjusting mechanism is going to be more durable than most such systems so I am going to give it a try. If I need to bleed off more gas to make this all work together (lightweight BCG with delrin buffer) I will likely try a adjustable gas key to accomplish that, unless Spike's Ti BCG solves the problem. |
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No need for a adjustable gas block. I am using one of these. Adjustable gas key https://www.rubbercityarmory.com/ProdImages/adj_gas_key.jpg What happens when you completely shut off the gas with this? Now you have ALL the gas entering a closed key trying to push the carrier back (with a tilt at that). Seems odd to me |
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Quoted: What happens when you completely shut off the gas with this? Now you have ALL the gas entering a closed key trying to push the carrier back (with a tilt at that). Seems odd to me Quoted: Quoted: No need for a adjustable gas block. I am using one of these. Adjustable gas key https://www.rubbercityarmory.com/ProdImages/adj_gas_key.jpg What happens when you completely shut off the gas with this? Now you have ALL the gas entering a closed key trying to push the carrier back (with a tilt at that). Seems odd to me and set screws are notorious for seizing up as well |
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What happens when you completely shut off the gas with this? Now you have ALL the gas entering a closed key trying to push the carrier back (with a tilt at that). Seems odd to me Quoted:
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No need for a adjustable gas block. I am using one of these. Adjustable gas key https://www.rubbercityarmory.com/ProdImages/adj_gas_key.jpg What happens when you completely shut off the gas with this? Now you have ALL the gas entering a closed key trying to push the carrier back (with a tilt at that). Seems odd to me I never tried completely closing it off. I simply started by turning one full turn in between rounds until it no longer cycled. Then repeat opening up by 1/4 turn until reliable. Fully closed the bolt is still going to move some I would imagine. I went this route because I already had the Titanium V7 gas block and wanted to keep as much weight as possible off the front. This is also cheaper. Spikes is doing something similar with there Titanium BCG. Not sure exactly what or if it will be adjustable but it was mentioned that a adjustable gas block is not necessary. Thought there was also a picture of the Spikes carrier that had the gas key blurred. |
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can they sell me a warm weather only version? Quoted:
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Why was the S7 bolt abandoned? Someone posted there were issues that showed up in testing it at 40 below zero can they sell me a warm weather only version? Yes they have them for 50*, 60*,70*,80*,90* and 100* if you live in Arizona. LOL |
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Potato Picture incoming... Waiting for SBR papers so currently I have my upper on a pistol lower, with regular weight and heavy (SB15) parts. Light Weight lower is paired with a 16" barreled upper. http://i.imgur.com/0upfkMo.jpg I am using AccuGroup poly parts for FCG, Pins, etc. I also have a extremely light weight delrin buffer I am using in these weights, but the entire system is yet untested. I plan to use a Ti BCG, I was hoping for Spikes - I may go with a St. Croix or Boomfab for now. A key to spike's was going to be the idea that it could be used without an adjustable gas block - Tom was not able to disclose what mechanics are involved, but if true my combination of adjustable gas block, lightweight Ti BCG and extremely light weight Delrin buffer may all work together. This is experimental, some parts may have to be swapped to get everything working in harmony, and I just may not like the feel/performance of others - such as some of the polymer parts. http://i.imgur.com/YPrKptg.png Would love input on other parts, etc. Quoted:
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details?? Potato Picture incoming... Waiting for SBR papers so currently I have my upper on a pistol lower, with regular weight and heavy (SB15) parts. Light Weight lower is paired with a 16" barreled upper. http://i.imgur.com/0upfkMo.jpg I am using AccuGroup poly parts for FCG, Pins, etc. I also have a extremely light weight delrin buffer I am using in these weights, but the entire system is yet untested. I plan to use a Ti BCG, I was hoping for Spikes - I may go with a St. Croix or Boomfab for now. A key to spike's was going to be the idea that it could be used without an adjustable gas block - Tom was not able to disclose what mechanics are involved, but if true my combination of adjustable gas block, lightweight Ti BCG and extremely light weight Delrin buffer may all work together. This is experimental, some parts may have to be swapped to get everything working in harmony, and I just may not like the feel/performance of others - such as some of the polymer parts. http://i.imgur.com/YPrKptg.png Would love input on other parts, etc. soruce of LW barrel?? |
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BCM for the part, sent it to ar15 barrels to have it turned down, cut shorter, etc..... Quoted:
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soruce of LW barrel?? BCM for the part, sent it to ar15 barrels to have it turned down, cut shorter, etc..... Bad idea !!!!! Feedback for AR15barrels.com on the EE |
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Woah. Had no idea. The good news, all is well. I got my barrel back in just a few weeks and it looks like good work. For future reference, what are the top providers for having barrel's re-profiled, etc? |
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Woah. Had no idea. The good news, all is well. I got my barrel back in just a few weeks and it looks like good work. For future reference, what are the top providers for having barrel's re-profiled, Quoted:
Woah. Had no idea. The good news, all is well. I got my barrel back in just a few weeks and it looks like good work. For future reference, what are the top providers for having barrel's re-profiled, Hopefully Randall is cleaning his act up... At one time he was THE "go to" guy for barrel work. A VERY knowledgeable individual that did outstanding work. Barrel re-profiling isn't rocket science, any decent local machine shop can do this. Hell, I have a friend of mine re-profiling mine on a Grizzly lathe in his garage
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ADCO has a stellar rep. I don't know if randall will ever be able to live that down.
There are some others, someone mentioned another place for dimpling.... can't remember I went ahead and got the JP carrier. It sure is nice and nociably light. I could even take a little more weight off the tail section, but for $225, it was a good deal for only 1oz heavier than the Ti carriers. |
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Marvin Pitts a.k.a. Nefarious Arms. Used to be associated with KAC. Quoted:
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There are some others, someone mentioned another place for dimpling.... can't remember Marvin Pitts a.k.a. Nefarious Arms. Used to be associated with KAC. that sounds like it. is he in FL? |
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Spikes I want one of these NOW. Just got finished with my 6.8 SPC with 16 inch Wilson Combat barrel. With a JP LMOS carrier it weighs 4.6 pounds without scope and another 13.4 ounces with Weaver 2.5-10x38 scope and aero precision mounts. Getting half inch groups at 100 yards with 90 grn Gold Dots and just under 1 MOA with Hornady 120 SSTs.
I want to cut another 3-4 ounces, the titanium carrier will help. Can always use the JP LMOS carrier on another build. Using a Spikes upper receiver, getting an upper without forward assist to cut nearly two ounces. Now after this I want a titanium bolt catch. Last heavy part on a AR15, as you can get in titanium the grip screw, takedown pins, forward assist, selector, gas block, flash hider, Not sure if anyone would make a titanium barrel nut, but it could cut half the weight of the std. 1.4 ounce nut. |
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Spikes I want one of these NOW. Just got finished with my 6.8 SPC with 16 inch Wilson Combat barrel. With a JP LMOS carrier it weighs 4.6 pounds without scope and another 13.4 ounces with Weaver 2.5-10x38 scope and aero precision mounts. Getting half inch groups at 100 yards with 90 grn Gold Dots and just under 1 MOA with Hornady 120 SSTs. I want to cut another 3-4 ounces, the titanium carrier will help. Can always use the JP LMOS carrier on another build. Using a Spikes upper receiver, getting an upper without forward assist to cut nearly two ounces. Now after this I want a titanium bolt catch. Last heavy part on a AR15, as you can get in titanium the grip screw, takedown pins, forward assist, selector, gas block, flash hider, Not sure if anyone would make a titanium barrel nut, but it could cut half the weight of the std. 1.4 ounce nut. Seekins used to make a Ti barrel nut for an old style hand guard that directly threaded ontot he upper receiver but that system is discontinued and they don't have any of those nuts. They had an extended front section and flats rather than teeth though. I don't know if you can make a Ti nut quite as thin in certain places as a steel. There are alot of afterrmarket systems w/ proprietary lightweight nuts. |
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Now after this I want a titanium bolt catch. Last heavy part on a AR15, as you can get in titanium the grip screw, takedown pins, forward assist, selector, gas block, flash hider, Not sure if anyone would make a titanium barrel nut, but it could cut half the weight of the std. 1.4 ounce nut. The weight of titanium for the most part is around 55-60% of steel whereas aluminum is around 35-40% the weight of steel. This is assuming a part of the exact same dimensions. I'm currently running aluminum grip screws.
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[ARCHIVED THREAD] - Titanium BCG (Page 5 of 5)
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