u/GitGooder

Aimpoint CompM2 with GDI mount
Surefire m951 with LED conversion
Redi-mag mk1
Vultor imod stock
KAC vertical grip
Magpul Tmags

I was wondering if anyone else had brass hit the side of their forward assist. Ammo used was PPU m193 and never had a failure with 300 rounds. Just noticed the brass marks on the side of receiver and was wondering if that was normal.