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NEW & UNFIRED is a Factory HK-MR556A1 CQB Complete Upper Receiver,10.4″ Barrel With a Factory HK Adjustable Gas Block and More. New Production Date Code (CC) – 2022. S/N 143-037489.
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 2-Position Adjustable Gas Block With Sling Loops, 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 and a Surefire “Warcomp” 3-Prong Socom Flash Hider/Suppressor Mount. File Pics Shows w/o AGB Sling Loops but Included – See Additional Pics for that detail.
This New & Unfired Factory Upper Receiver Comes Complete with the Factory Charging Handle & Complete Factory MR556 Bolt Carrier Group for a Complete Drop-in Plug-n-Play Unit.
Test Fired in both Configurations by Terry Dyer Gunsmith Only for Function.
Includes a “Certificate of Authenticity” with Serial Number from TDyer Gunsmith for the Upper Receiver Conversion to 10.4″.
Ready for your Short Barrel Rifle or Pistol Build.
ALL NFA RULES APPLY.