Tokyo Marui HK45 Tactical (Black / Tan) ra-tech The AAP-01 features holes along

The AAP-01 features holes along its body that allow the user to mount picatinny rail on it for the mounting of optics

which provides great gas efficiency

The system performs extremely well with most stock hop up configurations

The ARP 556 utilizes standard M4 style magazines

Best in conjunction use with high flow blow off valve

Tokyo Marui HK45 Tactical (Black / Tan) ra-tech The AAP-01 features holes alongAbout HK45 HK45 is a German semi auto pistol designed 2006 and manufactured in 2007 by Heckler & Koch, in order to meet requirments set forth in the US Military Joint Combat Pistol Programme which had the purpose of arming the US Military with a . 45 ACP semi automatic pistol instead of the 9mm M9 pistol. However, this programme was suspended indefinitely in 2006 and the M9 pistol remains the standard issue pistol of the US Military, HK45 still launch