Heckler & Koch MR556 A4 Rifle 5.56x45mm 16.5″ Black 10rd
Only 1 left in stock
Ships in 7 business days
⚠︎ Shipping & Purchase Restrictions
Firearms, ammunition, and NFA items are subject to shipping and transfer restrictions based on product type, destination, and inventory source.
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Ammo: No sales to AK, CA, HI, IL, NY
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Must ship to FFL: DC, NJ
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SOT/NFA Items: No sales to CA, DE, HI, IL, NY, MD, WA
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Firearms & Parts: Additional restrictions apply, particularly in AK, CA, HI, NY, WA.
All orders are subject to state and local laws and shipping eligibility.
Pick your FFL at checkout, or search dealers by ZIP first. You must be 21+ to take transfer of a handgun.
Product Information
Description
The Heckler & Koch MR556 A4 is a semi-automatic 5.56x45mm rifle with a 16.5-inch threaded barrel and one 10-round magazine. This H&K model 81000828 features a short-stroke gas piston system, adjustable gas regulator for suppressed or unsuppressed operation, ambidextrous controls, an adjustable stock, and a Picatinny optics rail. Its black finish is anodized.
California Proposition 65 warning: This product can expose you to chemicals known to the State of California to cause cancer or reproductive harm. See www.P65Warnings.ca.gov.
Full Specifications
| SKU | TS-642230269415 |
| UPC | 642230269415 |
| Manufacturer Product Number | 81000828 |
| Brand | H&K |
| Action | Semi-Auto |
| Barrel Length | 16.5" |
| CA Prop 65 | Yes |
| Caliber | 5.56x45mm |
| Firearm Capacity | 10 |
| Firearm Platform | AR Rifle |
| Gun Finish | Anodized |
| Gun Model | MR556 A4 |
| Magazines Included | 1 |
| Model Series | AR-15 |
| Optic Ready | Picatinny Rail |
| Stock Material | Synthetic |
| Threaded Barrel | Yes |
| Barrel Twist | 1:7 |
Shipping, Transfer & Returns
Shipping
- Insured to your FFL in 1–2 business days.
- Online only — no counter pickup at TS Firearm.
Transfer
- 21+ for handguns. Form 4473 and background check at the dealer.
- Dealer transfer fees are set by the dealer.
Returns
- Inspect at the counter before accepting transfer.
- Defects go to Canik’s warranty; we open the claim.
