Elite Force H&K UMP .45 Airsoft GBB Gas Blow Back SMG - Black Loaders rotating brass threads and replaceable

rotating brass threads and replaceable brass top flange

#111 N70 O-ring Brown - 20

with the updated naming convention

and retract without chopping the ball

Elite Force H&K UMP .45 Airsoft GBB Gas Blow Back SMG - Black Loaders rotating brass threads and replaceableThe HK UMP: an iconic submachine gun used by the world's elite government and law enforcement agencies. What's it stand for? Well, besides freedom, UMP stands for Universal Machine Pistol and is universally awesome when it comes to close quarter battle. Naturally, we went ahead and licensed several models for airsoft, including this exquisite gas blowback version. Built from the ground up with first rate parts & materials, the HK UMP GBB is part of