Heckler and Koch (HK USA)
MR556A4 UPPER KIT 5.56MM 16.5"
In stock — ships from distributor
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| Brand | Heckler and Koch (HK USA) |
|---|---|
| Model | MR556A4 URK |
| MPN | 51000384 |
| UPC | 642230270213 |
| Category | Accessory-Uppers / MR556 Series |
Heckler & Koch MR556 A4 Upper Receiver, 223 Remington/5.56 NATO, 16.5" Barrel, Threaded 1/2X28, M-LOK Handguard, Anodized Finish, Black, Fits AR-15 Lower Receivers, Includes Bolt Carrier Group, Charging Handle, Buffer Weight and Buffer Spring 51000384