11-22-2011, 05:37 PM
QuadCam Wrote:no doubt! Have you ever mortared and unfired round that was stuck in the chamber. I have, and it is disconcerting to say the least.......especially whne you examine the extracted bullet/case and you see a light dent in the primer from the mortaring exercise!
Light primer indent from the firing pin is from the bolt going into battery with a floating firing pin. The original Armalite AR15 & Colt Model 601's had problems with slam fires because the firing pin head had much more mass to it...enough so that it acted like an inertia-based firing system, especially in hot weather or with a warmed-up gun. They changed the firing pin head to a smaller size, and slam fires went away. Mortaring does not produce a firing pin indent on the primer.