GHK M4 Loading Nozzle (# M4-15-L/ Under 1J Ver.)

GHK M4 Loading Nozzle (# M4-15-L/ Under 1J Ver.) Polymer Construction Design For Replace the Original Parts Suitable For M4 Series Gas Blow Back GBB Rifle Airsoft Guns -HFC134a (approx. 0.5 Joule) -Green Gas (approx. 0.6-0.7 Joule) -CO2 (approx. 0.7 Joule)