How to I.D. AR 15, M16 & Mil Spec Bolt Carrier Groups

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, Thanks for watching~ Sootch00 Music: “orchestra-action-short“ Pond 5