Hk 417d (2nd gen gear box [reinforced]) -Lightly used -GB internals 100% stock -ZCI 6.03 R-Hop Barrel (can't remember length, got it close to stock size as possible) -modify flat hop bucking + S Nub x4 417 mid cap magazines with upgraded springs (push .4s with no issue) x4 Kydex customs 417 mag carriers C.I.H. or PayPal process complete before or at the exchange.