Description
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
| Product Specifications: | ||
| UPC: 642230270213 | Barrel Length: 16.5″ | |
| Finish/Color: Anodized | Fit: AR-15 | |
| Caliber: 223 Remington | Caliber2: 556NATO | |
| Manufacturer: Heckler & Koch | Part Number: 51000384 | |
| Model: MR556 A4 Upper Receiver | Type: Upper | |
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