Dustin Cantrell
Well-Known Fanatic
What are the differences between semi auto BCGs and full auto BCGs? If a full auto BCG functions properly in a semi auto, then why would anybody buy a semi auto BCG?
BCGs
- Thread starter Dustin Cantrell
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45recoil
likes to party
From my very limited ar experience full auto bcg help with feeding and felt recoil.
I'm sure the ar fellas can answer more thoroughly and correct me if I'm wrong.
I used a BCM FA bcg and it ran fine.
I'm not sure if full auto bcgs are used by 3 gunners
I'm sure the ar fellas can answer more thoroughly and correct me if I'm wrong.
I used a BCM FA bcg and it ran fine.
I'm not sure if full auto bcgs are used by 3 gunners
Dustin Cantrell
Well-Known Fanatic
I was thinking about buying a couple BCM BCGs. They're $160, so very comparable in price to others on the market. Never had a failure in my BCM rifle and I've read good things about their BCGs. Just not sure why semi auto BCGs would be made or purchased if full auto BCGs function properly or even better than semi auto BCGs in semi auto rifles. I'm a mechanical person so I like to know how things work or why things are made like they are.
technetium-99m
Mighty Righty
They have additional material on the bottom to trip the sear when the carrier goes home. They work fine in semi guns.
With the additional material GT metioned, F/A BCG's are a little bit heavier so in a SBR they tend to run alot better by slowing down the cyclic rate & reducing bolt bounce.
nikatkimber
Well-Known Fanatic
My guess is that at some time, or in some states, having a "M16" bolt - or any part - was not legal.
technetium-99m
Mighty Righty
Somewhere there is an ATF letter stating that full auto carriers are kosher. I believe a few manufacturers even ship rifles with auto carriers.
Matt1911
Cyrwus Jr.
Auto carriers are tits because Costa Ludus says so, and that's the bottom line fellas.
BCM even quotes "the letter" on thier website:
http://www.bravocompanyusa.com/BCM-Bolt-Carrier-Group-MPI-Auto-M16-p/bcm%20bolt%20carrier%20group%20auto%20mp.htm
We go the complete opposite way and shoot the lightest bolt carriers we can find.
Dustin Cantrell
Well-Known Fanatic
Thanks, guys. I'll go with a full auto bolt for my next build.
