MR556A1 Upper Receiver Kit by Heckler & Koch: 16.5 Inch Cold-Hammer Forged Barrel, HK Free Floating Rail System Handguard
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Manufacturer: H&K
Part Number: 81000077
UPC: 642230259300
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
Technical Specifications
| Caliber | 5.56 mm |
|---|---|
| Weight | 3.00 oz |
| Manufacturer | Heckler & Koch |
| Model | 81000077 |
| SKU | B298048 |
| UPC | 642230259300 |
| Availability | Out of Stock |
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Shipping & Returns
Shipping Information
- Orders typically process within 1-2 business days
- Ships via major carriers with tracking
- Tracking information provided for all orders
- Shipping costs calculated at checkout based on weight and destination
Return Policy
- 30-day return policy on accessories and non-firearms
- Items must be unused and in original packaging
- Contact us for return authorization before shipping items back
- Original shipping costs are non-refundable
Questions?
Contact us at 502-272-4859 or submit a question for assistance with shipping or returns.
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