PTS Mega Arms AR-15 Billet Upper (GBBR) Shotshell While many of their designs

While many of their designs are revolutionary

ASK209 standard comes with 4 sides rail on the hand guard and a full length top rail on the upper cover

but will fit on Tokyo Marui/ WE frame

High Power / FPS

Removable upper receiver cover

PTS Mega Arms AR-15 Billet Upper (GBBR) Shotshell While many of their designsThePTS Mega Arms AR 15 Billet Upper is a gas blowback rifle billet style upperreceiver that is compatible with PTS Mega Arms MKM AR 15 gas blowback rifles. Unlikethe proprietary upper receivers on our complete Mega Arms gas blowback rifles; this receiver comes with a standard barrel nut to enable the assemblycompatibility with most aftermarket rails on the market. Features: Black Oxidized Finish Authentic Mega Arms engravings Set includes: Mega Arms