Fun Gun Reviews Present: How to I.D. AR 15, M16 & Mil Spec Bolt Carrier Groups. Showing the differences between the M-16 and AR-15 Bolt Carriers, What makes a Mil-Spec BCG and dis-assembly of the BCG,
AB Arms Nickel Boron Coated Bolts: https://www.abarms.com/
Windham Weaponry: https://www.windhamweaponry.com/
Thanks for watching~ Sootch00
Music: “orchestra-action-short” Pond 5
Post time: Jun-17-2017