Videos tagged with M Mark

This "Smyth Busters" episode debunks the myth that AR-15 receiver forging marks (keyhole, square, diamond, M) dictate quality. Brownells Gun Techs Steve Ostrem and Caleb Savant explain that while a few manufacturers make the raw forgings, the final quality of an AR-15 receiver is determined by the company that performs the final machining. The bare forgings are largely similar, and the reputation of the finished firearm manufacturer is the true indicator of receiver quality, not the forge mark itself. The video aims to dispel a common piece of internet lore within the AR-15 community.