Selling my very lightly used arp-9, I’ve only shot two full drum mags out of it since i got everything installed, the gun was never shot once until it was upgraded. Tons of upgrades, motor, ceramic bearings, 6.02 barrel, gate trigger system with maxx trigger, high speed 12:1 gears, ported cylinder, aluminum cylinder head, and more that i’m forgetting. Nearly every internal part of this gun is upgraded. Comes with drum mag. The gun shoots extremely fast and accurate. Semi auto shoots basically like automatic. I’m about 1k into this gun including the labor i paid to have everything professionally installed. $640 paypal, you cover fees.