Heckler & Koch MR556 A4 Semi-automatic Short Barreled Rifle 556NATO 11"
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The MR556 A4 represents the peak of that evolution, offering unmatched capability and rugged durability. You can run this rifle harder and longer without sacrificing accuracy or reliability. The entire design has been reinforced and refined. Its short stroke gas piston operating system prevents hot carbon fouling from reaching the action, allowing the weapon to operate longer with less maintenance and reduced wear on internal parts. Its adjustable gas regulator enables the operator to fine-tune the action for either suppressed or unsuppressed use. The MR556 A4 is the top choice for those who prioritize performance and dependability above all else.
Specifications:
| Category: | NFA Products |
| Type: | Short-Barreled Rifles |
| Manufacturer: | Heckler & Koch |
| Model: | MR556 A4 |
| Part Number: | 81001048 |
| UPC: | 642230274112 |
| Action: | Semi-automatic |
| Caliber: | 556NATO |
| Barrel Length: | 11" |
| Capacity: | 30 Rounds |
| Finish: | Anodized |
| Color: | Black |
| Grips: | Polymer |
Features:
- Adjustable Gas Regulator
- Continuous Rail Interface Between Upper Receiver and Handguard
- Extended, Ambidextrous Charging Handle, Cold Hammer-Forged Barrel
- M-LOK Interface with Ambi QD Cups
Technical Specifications
| Caliber | 556NATO |
|---|---|
| Capacity | 30 |
| Barrel Length | 11.00" |
| Action Type | Semi-automatic |
| Finish | Anodized |
| Overall Length | 26.50" |
| Sights | No Sights |
| Safety | Ambidextrous Safety Lever |
| Grips | Polymer |
| Thread Pitch | 1/2x28 |
| Twist Rate | 1-in-7" |
| Manufacturer | Heckler & Koch |
| Model | 81001048 |
| SKU | R1233088 |
| UPC | 642230274112 |
| Weight | 6.61 lbs. |
| Magazines Included | 1 30 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 786-371-9602 or submit a question for assistance with shipping or returns.
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