ARMY R501 Costa Carry Comp GBB Pistol BK

It is a complete custom that incorporates Gunsmith Bros' STI Costa Carry Comp conversion kit and 5KU STI tactical magwell based on Tokyo Marui's gas blowback Hi-CAPA 5.1.
The grip is a genuine grip with high grip processing, and a dummy screw is also attached to the step ring.
The main body of the base gun is new and carefully assembled and adjusted one by one at our shop.