kinda, sorta AR failures... my Atchisson style .22lr conversion in my SBR broke a firing pin the other day, and I replaced it with one from Bore Buddy...the Bore Buddy pin is designed well, with a radius at the front step transition, strike end cone shaped to allow hammer to strike closer to the center line, and the actual point is not a typical chisel strike, but a flat not rounded circular impact just under the rim where it does not need to indent the double thickness of brass at the rim, but hits where the priming compound it located... really smacks the case
stuck a Volquartsen trigger, hammer, sear into the MK IV couple of weeks ago... VQ firing pin installed today... I think I'm about done with the Steel Challenge pair....