HK-MR556A1 Complete CQB Upper Receiver 10.4″ Barrel, HK Adjustable Gas Block, “Warcomp” Socom F/H & Factory HK Quad Rail by TDyer – 143-045839

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 (CD) – 2022.  S/N 143-045839.

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 All Factory HK Supplied  Upper Receiver Comes Complete with the Factory Charging Handle & Complete Factory MR556 Bolt Carrier Group for a Complete Drop-in Plug-n-Play Unit. This is the Real Deal.

Test Fired in Both Configurations by Terry Dyer Gunsmith Only For Function. You Can  Be Assured Of The Quality From The Well Known Manufacturer and Have Piece of Mind it Was Done Right. Plug-n-Play For Most Mil-Spec Lower Receivers.

Includes a “Certificate of Authenticity” with Serial Number from TDyer Gunsmith for the Upper Receiver Conversion to 10.4″.

This Unit Is Ready For Your Short Barrel Rifle or Pistol Build. The Time is Now!

LAST ONE IN-STOCK!

ALL NFA RULES APPLY.