Army Armaments - 5.1 Hi-Capa Costa Comp R501 with Threaded Barrel mk22 Upper section provides enhanced cheek

Upper section provides enhanced cheek weld

it means that this AEG is site friendly both indoors and outdoors

CO2 Powered - Green Gas ready

or other accessory you'd want to put up there

Army Armaments - 5.1 Hi-Capa Costa Comp R501 with Threaded Barrel mk22 Upper section provides enhanced cheekArmy Custom 5. 1 Hi Capa with Costa Compensator with Thread Adapter (Full Metal Black R501) Get your Chris Costa on with this Army 5. 1 Hi Capa with Costa Compensator Main features: Full Metal Construction 4 inch island type barrel with compensator Realistic Blowback System Double Stack Magazine Sealed New Generation Magazine Valves Fiber Optic Front Sight Reinforced Cold Resistant Polymer Nozzle Compatible with CO2 Green gas powered magazines