Allows for the regulator to be as close as possible to the engine

or when using the optic at night

Package Includes:

Magazine Capacity: 130 rds

Muzzle Velocity: 350~370 FPS (Measured with 0

SS Airsoft Custom Hi-Capa 5.1 - Gem Stone Ukarms Airsoft Allows for the regulator toTokyo Marui 5. 1 Hicapa base Airsoft masterpiece Mega Slide Airsoft masterpiece infinity magwell AIrsoft masterpiece pink threaded outer barrel Cowcow Silencer adapter AIP 120% recoil spring Cowcow Buffer Kit CowCow charging handle All SS Custom guns are one of a kind builds. May be fitment issues with front sights as these are stock TM sights. May require adhesive or aftermarket front sight.