Heckler & Koch Mr556 Upper Receiver Kit 16.5" Medium Contour M-Lok 81000584
HECKLER & KOCH MR556 5.56 16.5 MLOK UPPER RECEIVER KIT
SKU: 457281
Manufacturer part number: 81000584
UPC: 642230262607
The MR556A1 Upper Receiver Kit includes a complete upper receiver/barrel assembly bolt carrier assembly buffer and buffer spring allowing most high-quality 5.56 mm AR-style rifles to be retrofitted to HK's pusher rod system. - Complete MR556 Upper Receiver/Barrel Assembly HK 16.5 inch cold-hammer forged barrel upper receiver with forward assist extended convertible charging handle HK Free Floating Rail System handguard - Complete MR556 Bolt Group Assembly - Tungsten Filled HK Proprietary Buffer - HK Proprietary Buffer (Action) Spring
Specifications
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| Barrel Finish | Matte Black |
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| Barrel Length | 16.5 |
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| Barrel Material | Steel |
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| Caliber | 5.56mm NATO (.223 Rem.) |
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| Has Sights | false |
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| Model | MR556A1 Upper |
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