g&p custom magpul m4 rare magpul body is amazeing condition I put a shorter outer barrel on for 14mm- threads. parts list: retroarms gearbox gold m125 spring ported cylinder lonex cylinder head super shooter pistion head ares piston short stroked 2 teeth 18:1 gears short stroked 2 teeth bearing bushings gate titan retroarms red trigger asg 45k infinity motor rhop flat nub, 70° bucking 6.05 barrel polished Angel customs red charging handle cnc mlok hand stop shoots 380fps 30rps, can hit 230-250feet accurately. (scope not included)