Heckler & Koch 81001051 MR556 A4 5.56mm 11" Barrel M-LOK Semi-Auto Rifle
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Heckler & Koch MR556 A4 5.56x45mm Semi-Auto Rifle, MFG# 81001051, UPC: 642230269446
The Heckler & Koch MR556 A4 is a reliable semi-automatic rifle chambered in 5.56x45mm NATO. Featuring an 11-inch threaded barrel, M-LOK handguard, and a black synthetic 6-position stock, this rifle is designed for versatility and performance. The ambidextrous controls and Picatinny rail receiver enhance its usability for various shooting applications.
Specs:
Technical Specifications
| Caliber | 223 Rem | 5.56 NATO |
|---|---|
| Capacity | 10 |
| Barrel Length | 11.00" |
| Action Type | Semi-Auto |
| Finish | Black |
| Overall Length | 26.50" |
| Frame Material | Fully Ambidextrous Lower |
| Sights | No Sights |
| Safety | Ambidextrous Safety Lever |
| Grips | Black Polymer |
| Thread Pitch | 1/2x28 |
| Twist Rate | 1-in-7" |
| Manufacturer | Heckler & Koch |
| Model | 81001051 |
| SKU | B975455 |
| UPC | 642230269446 |
| Weight | 6.61 lbs. |
| Magazines Included | 1 10 rd. |
| Threaded Barrel | Yes |
| Color | Black |
| Availability | Out of Stock |
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Shipping & Returns
Ships to your local FFL
This firearm ships to a licensed dealer (FFL) near you for pickup, not to your home. You'll choose your FFL during checkout — and if you don't have one in mind, we'll help you find a nearby dealer. You complete the background check and pick it up there.
Shipping Information
- Orders typically process within 1-2 business days
- Firearms ship via FedEx or UPS with signature required
- Tracking information provided for all orders
- Shipping costs calculated at checkout based on weight and destination
- Total delivery time to FFL: typically 3-5 business days
Return Policy
- Firearms must be returned unfired and in original packaging within 3 days of FFL transfer
- 15% restocking fee applies to all firearm returns
- Contact us for return authorization before shipping items back
- Original shipping costs are non-refundable
Questions?
Contact us at 407-347-9840 or submit a question for assistance with shipping or returns.
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