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Posted: 11/21/2011 3:00:19 AM EDT
[#1]
i have no idea but based on what i hear with SBR's i would think the non FA BCG would be more reliable.
lighterweight combined with not as much gas pressure = better cycling. any one got a factual answer? |
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Posted: 11/21/2011 3:21:43 AM EDT
[#2]
Full auto bolt carriers are very slightly heavier (slowing the action down... usually desirable in an SBR application) and it shrouds the firing pin so the pin isn't the part cocking the hammer.
Generally speaking, you can get more weight by going to a heavier buffer, but the extra weight certainly doesn't hurt, most of the time. The shrouded firing pin is the main reason to use a full auto BCG. |
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Posted: 11/21/2011 4:00:28 AM EDT
[#3]
If you buy the DD Mk18 upper it comes with the FA BCG.
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Posted: 11/21/2011 6:52:16 AM EDT
[#4]
Quoted:
i have no idea but based on what i hear with SBR's i would think the non FA BCG would be more reliable. lighterweight combined with not as much gas pressure = better cycling. any one got a factual answer? Actually it would be opposite IMO. Most SBRs have higher gas pressure due to shorter gas system, I use the FA BCG and T2 Heavy buffer to slow things down and lessen recoil. I only use FA BCGs. |
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Posted: 11/21/2011 10:05:36 AM EDT
[#5]
As far as performance I dont see any difference between SA/FA
Also never any problems with the Older SA carriers with the exposed firing pin CMT & LMT SA carriers have shrouded firing pin So no so called problems 
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Posted: 11/21/2011 10:10:30 AM EDT
[#6]
Quoted:
Full auto bolt carriers are very slightly heavier (slowing the action down... usually desirable in an SBR application) and it shrouds the firing pin so the pin isn't the part cocking the hammer. Generally speaking, you can get more weight by going to a heavier buffer, but the extra weight certainly doesn't hurt, most of the time. The shrouded firing pin is the main reason to use a full auto BCG. Newish SA carriers have the shrouded firing pin |
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Posted: 11/21/2011 1:12:35 PM EDT
[#7]
I've used both in a 10.3 & it doesn't matter.
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Posted: 11/21/2011 5:35:45 PM EDT
[#8]
Thanks a lot for all the replies. everyone's input was very helpful. I think I will stick with the FA carrier for this build.
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Posted: 11/21/2011 7:06:08 PM EDT
[#9]
I wouldn't pay more for FA, but the extra weight is nice on 16" or shorter rifles. Same price, I'd go for FA.
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Posted: 11/21/2011 8:27:31 PM EDT
[#10]
The difference in weight is minimal. The shrouding is the more desirable effect to me. Most these days are FA so just stick with that instead of trying to hunt down a quality SA piece.
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Posted: 11/21/2011 9:16:27 PM EDT
[#11]
I got the m16 bcg from larue and it has a FTF about every other round when running suppressed.
Mabey FA carriers dont work well when over gassed??? |
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Posted: 11/22/2011 3:23:49 AM EDT
[#12]
Quoted:
Quoted:
Full auto bolt carriers are very slightly heavier (slowing the action down... usually desirable in an SBR application) and it shrouds the firing pin so the pin isn't the part cocking the hammer. Generally speaking, you can get more weight by going to a heavier buffer, but the extra weight certainly doesn't hurt, most of the time. The shrouded firing pin is the main reason to use a full auto BCG. Newish SA carriers have the shrouded firing pin Yup. But unless you can inspect it, I would go with the FA carrier to be sure. There's no advantage to SA carrier I can think of. Might as well use the carrier the gun was designed with. I have seen a broken firing pin on an unshrouded carrier (though the source of the pin was unknown, so likely the pin was crap). |
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Posted: 11/22/2011 8:26:15 AM EDT
[#13]
Who all makes the FA bolt carriers?
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Posted: 11/22/2011 8:51:54 AM EDT
[#14]
Does anyone feel that their gun cycles smoother with one or the other? Can you feel the speed and recoil difference by changing from SA to FA weight carriers?
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Posted: 11/22/2011 11:29:43 AM EDT
[#15]
Quoted:
Does anyone feel that their gun cycles smoother with one or the other? Can you feel the speed and recoil difference by changing from SA to FA weight carriers? nope but you could try running different buffers |
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Posted: 11/22/2011 2:28:11 PM EDT
[#16]
The shrouded firing is the most important, the extra weight of the FA BCG doesn't hurt either, especially with a short barrel . IMHO the Young Man. BCGs are a no brainer for a top shelf BCG, unless your on a tight budget ?––-> http://www.youngmanufacturing.net/
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Posted: 11/22/2011 4:53:30 PM EDT
[#17]
I use nothing but FA carriers and rounded hammers. No problems, no bent firing pin retainer pins. Guns have smooth action and no failures of any kind.
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Posted: 11/22/2011 7:12:50 PM EDT
[#18]
I have a Young's NM F/A BCG. Their gggggggggreat! ::points finger up in the air"
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Posted: 11/23/2011 1:54:23 AM EDT
[#19]
Quoted:
I have a Young's NM F/A BCG. Their gggggggggreat! ::points finger up in the air" Me too. My dealer, Bison, staked the carrier key bolts for me with his MOAKS tool. Not only are the Young's NM carriers chrome, but also slightly oversize on the OD. The differences are detailed on their website. |
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Posted: 11/23/2011 4:22:36 AM EDT
[#20]
Quoted:
Quoted:
I have a Young's NM F/A BCG. Their gggggggggreat! ::points finger up in the air" Me too. My dealer, Bison, staked the carrier key bolts for me with his MOAKS tool. Not only are the Young's NM carriers chrome, but also slightly oversize on the OD. The differences are detailed on their website. +2...I went to the range yesterday, once I got home, I pulled the BCG, I didnt even bother wiping it off, it looked like it was never fired. I love the hardchromed finish. |
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