WTS: HK MR556 SBR/pistol upper receiver kit C/PIX!

WTS: HK MR556 upper receiver kit as shown. 500 rounds fired. Barrel cut down to 11.625", turned down to 416 "heavy barrel" profile, and dimpled by Marvin Pitts. Ejects at about 4:30 using Lake City ammo with either the MR spring or milspec Colt M4 spring (I preferred using a milspec spring as the heavy HK spring wasn't needed). Has Vortex flash hider, HK416 "X" head rail bolt, gas block mounted HK flip up front sight as shown. Firing pin safety removed and not included (with a milspec spring it dimples primers less than a standard AR). This is sold as shown and as is. So, if you like PMC, Wolf or other low powered ammo, please don't buy this kit as I don't know if or how it will function.

$2150 obo shipped in CONUS. Payment by USPS money order only.

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