In light of the 224 Valkyrie (supersonic velocities at 1,200+ yards) I had to repost this video of the BEST BCG... https://t.co/8vi5WtvpvQ
M16/4 Full-Auto Carrier Assembly
This Full Auto Carrier Assembly is Mil-Spec grade, coated in EXO technology and will drop into any standard M16, M4 or AR15, making for easy clean up and longer wear life.
Nickel Boron treated parts include:
EXO Coated Full-Auto Bolt Carrier
EXO Coated Gas Key (Staked)
Gas Key hardened to USGI specs
Grade 8 hardened fasteners