This is an ARP 556 heavily tuned on the inside. Perun ETU Shimmed rocket 13:1 gears Gateway drop stock Maxx Trigger Nineball 6.03 inner barrel Flat hopped with purple bucking All compression parts are lubed and no leaks Insidious armory cylinder Rocket air nozzle Fore grip Red dot with riser ARP battery extender Really short trigger pull (cqb/speedqb) 6 m4 mags 2 are EPM mid caps Battery charger 2 11.1 lipos with dean connectors SLR muzzle flash LOCAL ONLY price is set