Pws mod 1 upper 114. 223 wylde .surefire warcomp. This upper is not p&w .pws full ambi lower pws h2 buffer .bcm pnt trigger .bcm grip .radian safty selector .radian c/h .excellent suppressor host I've run an rc2 and b&t and runs flawless. And very accurate . Choice of pistol brace or magpul stock Killer deal