Elite Force H&K USP Gun Rebuild Kit
OptimusPrime
21 Aug 2017
Elite Force Guns released a series of videos showing you how to work with their gun rebuild kits. In this video, they cover the USP GBB Pistol and you can ask your nearest airsoft retailer if they have this in stock... "This installation video guide is for the Elite Force HK UPS Gas blowback by KWA."