HK-MR556A1 Complete Upper Receiver 10.4″ Barrel with AGB, “Warcomp” F/H & Factory HK Quad Rail by TDyer – 143-032219

NEW & UNFIRED is a Factory HK-MR556A1 CQB Complete Upper Receiver,10.4″ Barrel.  New Production, Date Code (CC) – 2022.  S/N 143-032219.

Barrel was Cut & Crowned to 10.4″ and Threaded 1/2 X 28 by TDyer Gunsmith. Barrel Gas Port was relieved for a Factory German Hk-416 Adjustable Gas Block for Suppressed & Unsuppressed Cycling. Includes a Factory German HK 9″Inch HK416 T-Marked Quad Rail Hand Guard that was Modified with a Cut-out for Access to the Adjustable Gas Block with a Surefire “Warcomp” Flash Hider. The Factory Charging Handle & Complete Factory MR556 Bolt Carrier Group are included for a Complete Drop-in Plug-n-Play Unit.

Test Fired in both Configurations by Terry Dyer Gunsmith Only for Function.

This Complete Upper Receiver is a New Unfired & Unmolested Unit.  Includes a “Certificate of Authenticity” with Serial Number from TDyer Gunsmith for the conversion to 10.4″.

Ready for your SBR or Pistol Build.

ALL NFA RULES APPLY.