ESA™ system allows with a minimal amount of time to change the main spring

allowing the user to use LiPo batteries without worrying about damaging the gun and a programmable fire control which allows the shooter to choose either full-auto fire

and to prevent damage to electronic switches on controller boards

the best selection of Airsoft products

Waterproof: IPX6

SS Airsoft Custom Hi-Capa 5.1 - Your Majesty Hi-Capa Valve ESA™ system allows with aTokyo Marui 5. 1 Hicapa base Airsoft masterpiece Mega Slide pink Airsoft masterpiece Infinity magwell pink Airsoft masterpiece 5. 1 threaded outer barrel pink Cowcow silencer adapter silver AIP 120% recoil spring Cowcow Buffer Kit 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.