My Toy
Ultimate Member
My question is in the title. Are there any concerns with respect to ATF or other law enforcement entities by replacing a bolt carrier group in an AR-15 with an M-16 bolt carrier group?
Legality of putting an M-16 bolt carrier group in an AR-15?
- Thread starter My Toy
- Start date
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Not with ATF.
danb
dont be a dumbass
Just the bolt carrier?
I think its the full Fire Control Group or auto sear ATF does not like. Bolt carrier on its own does not make it fire full auto.
Lots of places sell "M16 Bolt Carriers" (see link to PA Anderson BCG). Not a problem.
clandestine will be along with more info, but IIRC the difference is a longer cut for the hammer, thats it. Not functionally different really (maybe better reliability) but its not full auto.
ETA: http://www.thetruthaboutguns.com/20...-full-auto-semi-auto-only-ar-15-bolt-carrier/
I think its the full Fire Control Group or auto sear ATF does not like. Bolt carrier on its own does not make it fire full auto.
Lots of places sell "M16 Bolt Carriers" (see link to PA Anderson BCG). Not a problem.
clandestine will be along with more info, but IIRC the difference is a longer cut for the hammer, thats it. Not functionally different really (maybe better reliability) but its not full auto.
ETA: http://www.thetruthaboutguns.com/20...-full-auto-semi-auto-only-ar-15-bolt-carrier/
- Jul 29, 2014
- 49,963
Bolt carrier groups are fine.
Fire control groups are where you can find yourself in deep Doo-doo.
Fire control groups are where you can find yourself in deep Doo-doo.
kalister1
R.I.P.
The Commercial Bolt Carrier is machined away so that it cannot contact the AUTO SEAR. You cannot install an Auto Sear in the lower without drilling a hole through both sides. By drilling the hole you just became a Felon.
There are RDIAS "Registered Drop In Auto Sear" available for purchase for ~$8 to 10K that were registered prior to 1985.
There are RDIAS "Registered Drop In Auto Sear" available for purchase for ~$8 to 10K that were registered prior to 1985.
Ranchero50
Ultimate Member
I actually like the idea of the trip lever keeping the hammer from dropping onto the bolt in an auto configuration and think it would be neat to incorporate it in a semi. I wonder how often really quick firing folks are firing faster than the bolt cycles.
NateIU10
Ultimate Member
The ATF Reference Guide (2014) provides:
This is the only general guidance on the subject I have ever seen. There are some letters floating around out there that state something contrary, but letters are only good for the person to whom the letter is written. I'm not saying it is or isn't a machinegun, but most people seem to think this is far more cut and dry than it truly is.
This is the only general guidance on the subject I have ever seen. There are some letters floating around out there that state something contrary, but letters are only good for the person to whom the letter is written. I'm not saying it is or isn't a machinegun, but most people seem to think this is far more cut and dry than it truly is.
I'll take two.
Auto sears start at about twice those prices.
Lightning links are at about $12,000 now.
Klunatic
Ultimate Member
I'll take 10 of each, LOL.
Lightning Links are selling for about $15k and RDIAS $35k.
http://machinegunpriceguide.com/html/sears_0.html
DutchV
Ultimate Member
- Jul 8, 2012
- 4,722
Short answer: everybody uses a "Full Auto" BCG because it's slightly heavier, or so we've been told. Don't worry about it.
danb
dont be a dumbass
Honestly, when I built my AR, it was hard to even find the "Semi" profile even if I wanted one.
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