PRO-ARMS RMR LIGHTWEIGHT MOUNT BASE FOR VFC SIG M17/M18/XCARRY Gas Magazines The gun shoots 120 m/s

The gun shoots 120 m/s (394 fps) out of the box and can be upgraded with ULTIMATE parts if desired

and full-auto fire select fire modes

-M14 Enhanced Battle Rifle

Some use the sound of the gun to automatically wind the mag

PRO-ARMS RMR LIGHTWEIGHT MOUNT BASE FOR VFC SIG M17/M18/XCARRY Gas Magazines The gun shoots 120 m/sThe Pro Arms CNC aluminum RMR mount for the SIG Air P320 M17 M18 XCarry GBB is a single piece designed for the mounting of the RMR style optic on the pistol. Compatibility: SIG Air P320 M17 M18 XCarry GBB Pistol Includes: x1 Pro Arms SIG Air M17 M18 XCARRY RMR Lightweight Mount Base (CNC Aluminum) Black x1 Screw Set