I've been running this bolt on my build since it was direct gas impingement, I've since had the upper swapped to the caps carbine system, and this bolt, and also the BRA extractor, conversion itself, and the bolt have never missed a beat, feeding, firing, and extracting everything from surplus to hand loads with no hiccups, no cracks, no signs of corrosion, and nothing even resembling hurt feelings on the black rifle arms parts. Unreal precision, performance, accuracy and durability. This bolt is hard as a rock, smooth as fresh glass, and evenly and darkly covered in Melonite, what more could you ever want from a bolt? Oh, and the cases fit the perfectly machines bolt face wonderfully because the diameter is spot on, making the whole firing sequence seamless, cases fly out of this thing like birds from a shook tree, clearing the ejection port without a moment of hesitation. Never so much as a clink off the brass deflector.
Reviewed by: (Verified Buyer) Joseph Gentile from Poughkeepsie, New York on 4/30/2017