CRBN GRX Zero Mask Airsoft / Airsoft Guns / Pistols / Spring If you're an HK UMP

If you're an HK UMP AEG user and all about a high round count

and is used by the British Army and many others

Running the H8R is best done with Umarex 12 gram CO2 and Elite Force Premium BBs

Connector: Mini Tamiya

CRBN GRX Zero Mask Airsoft / Airsoft Guns / Pistols / Spring If you're an HK UMPDifference between Less and More Size: Both masks will fit most people. The More size provides about 0. 5" extra protection on the front, chops, and ears. The headband strap thickness for the Less is 1. 5" wide and the More is 2" wide. All GRX Model Mask Includes: Includes matching limited edition visor, colored Lens, tinted Lens, clear lens, tools & hardware for visor, Microfiber cloth, microfiber lens covers, vinyl hard carrying case, and sublimated