FREE INSURED SHIPPING CONUS Base is a G&G ARP9 that has been gutted internally with some additional external modifications. - Redline N7 Milsim Engine - PolarStar UGS with R3 Buttstock - ProWin HopUp - Modify Flat Hop Bucking & Nub - Upgraded Barrel (Prometheus or PDI, I can’t remember) - Troy Rail - Includes 5 mid cap mags and 1 high cap mag *Built this gun in October 2018. Only been used twice since then. *Gun will ship with the upper receiver removed from the lower receiver. *Gun will sometimes double feed with heavy ammo at higher pressures. It seems to prefer .25g BBs. Since I would recommend this as a CQB gun, the issue shouldn’t arise often.