Win Gun Special Force 229S Airsoft Gas Blowback CO2 Airsoft Pistol Used Paintball Loaders Pressing the hinge button activates

Pressing the hinge button activates the spring loaded hinge pin system which makes changing out the Speed Feed a breeze

and most standard 40mm grenade shells

No need to pack around heavy testers with bulky dial gauges

As for the cylinder components

Win Gun Special Force 229S Airsoft Gas Blowback CO2 Airsoft Pistol Used Paintball Loaders Pressing the hinge button activatesFeatures Full Metal Slide with real steel look and feel hard polymer lower frame for light weight and durable performance. Realistic full blowback action automatic chambering semi automatic action. Railed frame for tactical accessories and attachments. High gas efficiency. Fires over 60 rounds per 12g Co2 cartridge. 15 round magazine capacities. On frame safety. Detachable magazine with spare magazines available. Serrated slide. On frame slide lock