The HK USP CO2 features a 16-round metal magazine that also houses the 12g CO2 gas cartridge

In addition to looking futuristic and functional

***Test results: FPS might be increased from 10FPS to 30FPS over stock setup

The Classic Army CA4 ML12 M-LOK Skirmish Carbine is one of many Classic Army entry level rifles

Tapp G-Series M4 Competition Adapter Airsoft HK VP9 The HK USP CO2 featuresCompatibility: Elite Force, UMAREX GLOCK and other GBB Pistols w VFC Blowback System SAI BLU, ISSC M22, Lonewolf, ZEV, G&P Custom, P80 and other GBB Pistols w WE Tech Gas Blowback System Not compatible w KWC, WinGun systems The Tapp M4 Modular Adapter converts your traditional gas airsoft gun to use HPA and accept standard M4 AEG magazines (super feed mags recommended). Modular design allows lower to be changed to different lowers. This makes the