Airsoft Masterpiece .45 Threaded Aluminum Outer Barrel for Marui Hi-Capa 5.1 GBB Pistol (Silver) Length-(mm)_100mm Compensator are generally used to

Compensator are generally used to redirect propellant gases which effectively counters both recoil and unwanted barrel rise

3 Sereis Airsoft Gas Blow Back GBB Pistol

Airsoft Surgeon Aluminum Magwell for Marui Model 17 / 18C (Silver)

etc that use 6mm BB

This is achieved by either by hex screws to adjust cheek riser height or by the magnet lock which allows variable stock extension

Airsoft Masterpiece .45 Threaded Aluminum Outer Barrel for Marui Hi-Capa 5.1 GBB Pistol (Silver) Length-(mm)_100mm Compensator are generally used toAirsoft Masterpiece . 45 Threaded Aluminum Outer Barrel for Marui Hi Capa 5. 1 GBB Pistol (Silver) Aluminum Construction Engraved ". 45 ACP" Marking 14mm Counter Clockwise Thread Suitable For Tokyo Marui Hi Capa 5. 1 Sereis Airsoft Gas Blow Back GBB Pistol