A direct descendant of the world-famous HK416, the MR556A1 is the commercial carbine from the same DNA. It offers the battlefield-proven reliability, durability and precision you would expect from a rifle that bears the name Heckler And Koch. The MR556A1 is assembled in the USA using US and German-made components and uses many of the same parts and assemblies developed for the HK416. Like the HK416, the MR556A1 uses a proprietary HK short-stroke gas piston in place of the direct-gas-impingement system found on lesser AR15-style rifles that propels exhaust gas into the upper receiver to operate the action. In the “closed” HK piston system, exhaust gasses never enter the receiver, which means the HK runs cooler, cleaner and more reliably. When adverse conditions, like dust, sand and mud are introduced, the advantage of the HK system becomes even more drastic. That is why so many of the world’s elite military and law-enforcement customers have absolute trust in their HKs. The MR556A1’s barrel is cold hammer forged from the highest quality cannon-grade steel. It has a 1 in 7″ twist and a taper-bore configuration, with a slightly smaller diameter at the muzzle for improved accuracy and velocity. And while the material and cold hammer forging process themselves greatly enhance durability, HK’s processes include many additional steps not taken by other manufacturers to produce superior accuracy and service life, ensuring performance well beyond “mil-spec.”
Thank you for choosing Blackstone Shooting Sports! If you have any questions regarding a recent purchase, or product, please feel free to reach out to our knowledgeable Guest Support Team; chat with a team member 7-days a week from 10am until 9pm.
“Live Chat” available on our website Blackstoneshooting.com Visa / MasterCard / Discover / American Express Accepted
It is the buyer’s responsibility to ensure that the item being purchased is legal to own in your city / state. Verify with your receiving dealer if you are not 100% sure that it is legal. – Magazines that violate capacity restrictions will not be shipped or substituted.
You must be 18 or older to purchase a rifle or shotgun and 21 or older to purchase a handgun.
You are responsible for compliance to your local and state laws.
Be aware of restrictions on extended magazines and certain types of AR-15 style rifles. Not for sale where prohibited.
Firearms: Blackstone will not sell or transfer a firearm to any of the following states: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Massachusetts, Michigan, Minnesota, New Jersey, New York, Rhode Island, Washington, Guam, Puerto Rico, Samoa, Virgin Islands. In addition, we do not conduct any international sales. **Last updated 01/01/2023 (subject to change)
Automatic Knives (OTF & OTS):
Blackstone will not sell or transfer any automatic knives to any of the following states: California, Colorado, Connecticut, Hawaii, Illinois, Maryland, Minnesota, New Jersey, New York, Rhode Island, Washington, Guam, Puerto Rico, Samoa, Virgin Islands, New Mexico, Pennsylvania, Virginia. **Last updated 01/01/2023 (subject to change)
During checkout you specify a Federal Firearms Licensee (FFL) near you who transfers the firearm to you, after successful background check if needed.
FFL can be your local Gun Shop, Gun Range or Pawn Shop willing to perform the transfer.
“Local Store Pick Up” in Charlotte, NC. *Sales tax may apply.
Blackstone Shooting Sports
2001 Wilkinson Blvd.
Charlotte, NC, 28208
The buyer is responsible for all FFL’s transfer fee/s upon pickup which is generally $15-30. “Local pickup” at our Charlotte location is free of charge.
For all FFL transfers, the firearm dealer (that we are sending the item/s to) must send us their valid license (FFL) by emailing ([email protected]). Blackstone is not responsible for any lost items shipped via USPS, FedEx, and UPS.
All ammunition will be shipped FedEx or UPS ground; no air freight allowed.
Ammunition and firearms must be shipped separately.
Always make sure you order the correct ammunition for your specific firearm.
Federal law requires that you must be at least 18 years old to purchase shotgun and rifle ammunition and 21 years or older to purchase handgun ammo.
Check your state and local laws for any other restrictions before ordering.
Ammo Shipping Restrictions: Blackstone does not ship ammo to CA, IL, NY, NJ, MA, DC, CT, or P.O. Boxes
Return Policy & Warranty
We fundamentally believe you will be thrilled with the products you purchase from Blackstone Shooting Sports. That’s because we go out of our way to ensure we get you the exact products you need from the best brands in the industry. We understand, however, that sometimes a product may not be what you expected it to be. In that unlikely event, we invite you to review the following terms related to returning a product.
If you need to return an item or cancel an order, simply contact our Guest Support Team at 704-414-6020 or by emailing [email protected] (be sure to include your order #). Feel free to use the live chat function on our website for the fastest support. All inquires received during business hours are answered same day!
*All canceled and returned items are subject to a 10% restocking fee.
Please allow 1-5 business days to credit back to your original form of payment.
Damaged/Used Product: Unless there is a verifiable manufacturer’s defect with the merchandise, no returns will be accepted on damaged or used products. This includes firearm parts that have been previously installed.
GENERAL PARTS & ACCESSORIES
Returns Within 30 Days: The original method of payment will be refunded in full. Merchandise must be in new condition with all original packaging, documentation, accompanying accessories, and a receipt.
Returns Within 10 days: The original method of payment will be refunded in full. Merchandise must be in new condition with all original packaging, documentation, and a receipt. Non-cash transactions:
Due to safety and liability concerns, Blackstone does not accept any returns on ammunition that have exited the facility. All online ammunition sales are final.
NEW & USED FIREARMS
Blackstone does not accept any returns on firearms. We will assist with all recalls, warranty claims, or manufacturer defects with firearms previously purchased from Blackstone.
Blackstone does not accept any returns on knives. This is to ensure every knife purchase from Blackstone is 100% factory sharp, blemish free, and warrantied by the manufacturer. We will assist with all recalls, warranty claims, or manufacturer defects with knives previously purchased from Blackstone.
North Carolina residents will be charged a 7.25% sales tax.
Questions / Contact Us
Operating Hours: Monday – Sunday: 10am – 9pm Contact Information: Please contact us with any questions or concerns We respond to inquiries same-day during business hours For fast service please reach out to our Guest Support Team: [email protected]704.414.6020 Blackstone Shooting Sports | 2001 Wilkinson Blvd. Charlotte, NC 28208 | 704-414-6020