Heckler & Koch MR556 A4 Upper Receiver, 223 Remington/556NATO, 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
HK UPPER MR556A4 5.56 16.5″ BLK
$2,499.00
HK UPPER MR556A4 5.56 16.5″ BLK
9 in stock
| Dimensions | 44.00 × 13.25 × 4.25 in |
|---|---|
| Manufacturer Name | Heckler & Koch |
| Manufacturer Part Number | 51000384 |
| Specifications | ["Suppressor-ready Concentric 1\/2X28 Threads","Adjustable Gas Regulator for Shooting Suppressed and Unsuppressed","M-LOK Interface with Integral Ambi QD Cups","Continuous Picatinny Rail Interface Bet |
| Sell Description | The MR556 upper receiver kit has been updated to include all the new A4 features, including new barrel profile, adjustable gas block, handguard and more. This kit includes a complete upper receiver/ba |
| Barrel Length | 16.5 |
| Finish | Anodized |
| Fit | AR-15 |
| Caliber | 223 Remington |
| Additional Caliber | 556NATO |
| Model | MR556 A4 Upper Receiver |
| Type | Upper |
| Color | Black |
| Warning | WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and reproductive harm. For more information, visit www.p65warnings.ca.gov |
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