Description
HK 416A5/MR223 factory Tan/RAL8000 stripped upper receiver. Includes the 416A5 piston shim/bushing but otherwise stripped. Unmarked but custom white mark/laser engraving is available.
These uppers do require a special barrel nut ( the thread pitch is different than standard 416 and MR556 ) and use a different barrel extension indexing feature. To use an MR556 barrel or standard 416 barrel, you would need to modify either the barrel extension or the upper receiver.
Very few available! Order while supplies last. We will probably not see more of these for a long time…
Other A5 build services and parts available. Click the button below to see more:
