The i4 and i5 utilize the same compatible lens

20 gram BB

If you are looking to improve the aesthetics of your handgun

Designed for any would be airsoft hitman

Package Includes: 1X Inner Barrel

KWA QRF Mod 1 echo1 The i4 and i5 utilizeThe QRF MOD. 1 is the rifle every airsoft fan has been waiting for. The inspiration behind the Mod. 1 came from a hybrid of an SMG and a Pistol Caliber Carbine and was created by some worlds leading airsoft designers and engineers. Packed with the new AEG 2. 5 gearbox, the QRF Series rifles comes equipped with KWAs patented Variable Performance System (VPS) which allows the user to adjust FPS on the go ? so you can play at any indoor or outdoor field