Refurbished HK USP 4.5MM Fixed Slide CO2 BB Gun Pistol 400FPS!

U.S. federal law requires that all airsoft guns are sold with this marking to avoid the guns being mistaken for firearms. If you remove the orange muzzle or flash hider from your airsoft gun, you will void the warranty for that item.

Crosman BB CO2 Pistol, Full Auto, Blowback Action, 400 FPS, 5 Barrel, Synthetic Stock, 20Rd - Impact Guns

Is it possible to turn a metal CO2 pellet gun into a firearm? - Quora

CROSMAN PFM16 FULL Metal CO2 BB Pistol - 0.177 cal 400 fps CO2 BB Gun Semi-auto $49.97 - PicClick

Replica Airguns Blog Airsoft, Pellet, & BB Gun Reviews

Replica Airguns Blog Airsoft, Pellet, & BB Gun Reviews

Replica Airguns Blog Airsoft, Pellet, & BB Gun Reviews

A Brief Comparison b/w Umarex Glock 19 Co2 Air-Pistol and HK45 Co2 Air – Scopes and Barrels

NEW H&K USP CO2 Blowback Airsoft Pistol - Black (2275043) $134.95 - PicClick

PISTOL

Umarex HK USP Blowback BB Gun

UMAREX - BERETTA Elite II M9 / M92 Co2 Non-Blowback .177 BB Air Pistol $45.00 - PicClick

Hk in Pet Supplies

Elite Force HK Heckler & Koch USP CO2 Powered 6mm BB Pistol Airsoft Gun, Standard Action, Black : Gas Blowback Airsoft Pistols : Sports & Outdoors