HK-MR556A1 Complete Upper Receiver 10.4″ Barrel with Factory HK Quad Rail by TDyer – 143-033116

NEW & UNFIRED is a Factory HK-MR556A1 Complete Upper Receiver, New Production, Date Code (CC), 2022.  S/N 143-033116.

Barrel was Cut & Crowned to 10.4″ and Threaded 1/2 X 28 by TDyer Gunsmith. Has a Factory German HK, 9″Inch HK416 T-Marked Quad Rail Hand Guard. Includes Factory Charging Handle, & Complete Factory MR556  Bolt Carrier Group and Factory Bird Cage Flash-Hider.  Factory Gas Block and Barrel Port were Relieved/Opened for Suppressed & Unsuppressed Cycling. File Photos.

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

Upper Receiver is a New Unfired & Unmolested. 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.