PTR PDWRBR3080101: At its core, the PDWR features a roller-delayed blowback system, coupled with a heat-treated, full-auto capable bolt carrier. The barrel is an 8.50\
PTR PDWR BR 20+1 8.50\" Black Nitride Heavy Contour Threaded Barrel, Black Parkerized Aluminum Picatinny Rail Receiver, SB Tactical Brace, Black Polymer Grip