There lots of GBB pistols in the market out theree out for the throne of the Tokyo Marui Hi-Capa GBB Pistol series. The Army Armament R501 GBB pistol is one of them, but will it be the best Hi-Capa in the market? Probaby not since there are other new Hi-Capa-styles out there. Kraken Airsoft takes a look at this GBB pistol in this video... "Today we check out the newest kid on the hicapa block The Army Armament R501!"