HK MR556A4 Complete Upper Receivers

Description

I’ve got a pair of brand new HK MR556A4 uppers I’m considering parting with. These are top-tier, no compromise uppers that have proven reliability and exceptional accuracy. The bolt alone is guaranteed for 150,000 rounds and they piston driven design and adjustable gas block make them amazing suppressor hosts as well. Civilian version of the legendary HK416 used in GWOT.

#1 – 16.5” HK MR556A4 Upper = $2,250
You won’t find this combo with the RAL8000 rail anywhere. Zero rounds through it.

#2 – 11” HK MR556A4 Upper = $2,000
For your pistol/sbr build. Zero rounds through it. Pic rail added to the bottom m-lok and muzzle device was removed and is currently hand tight.

I do have compatible lower receivers if interested.

Text me with any questions.

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