HK UPPER MR556A4 5.56 16.5 BLK
Brand: HK
UPC: 642230270213 • MPN: 51000384
Description
The HK MR556A4 Upper Receiver offers a 16.5-inch barrel length designed for AR-15 style rifles, featuring Heckler & Koch’s renowned piston-driven system. This upper replaces the traditional direct-impingement gas system with a piston and pusher rod configuration, reducing fouling and enhancing reliability. The anodized black finish provides durability and corrosion resistance suitable for demanding environments. Engineered with components originating from both the USA and Germany, the MR556A4 in...
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| Store | Price | Shipping | FFL Page | |
|---|---|---|---|---|
| Gas & Brass Armory | $2179.00 | Guns $24.95 - Accessories $15.00 | View FFL Page | View Offer |
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