Home / Hunting / Heckler & Koch / Heckler & Koch HK MR556 Upper Receiver Kit w/Bolt, Buffer Spring, M-LOK, & Barrel Assembly 81000584
Heckler & Koch HK MR556 Upper Receiver Kit w/Bolt, Buffer Spring, M-LOK, & Barrel Assembly 81000584
Lowest Price
Price unavailable
MSRP
$0
Savings
No verified offer
Verified In Stock at
0 Stores
Updated
Aug 26, 2026
Compare Deals from 2 Retailers
Verified availability, then price
Specifications
Description
Heckler & Koch HK MR556 Upper Receiver Kit w/Bolt, Buffer Spring, M-LOK, & Barrel Assembly 81000584
