The latest update from HK-USA to the commercial variant of the legendary HK416, the MR556 A4 and MR762 A4 represent an enhanced example of “no compromise” HK performance.
Its short-stroke gas piston operating system does not impart hot carbon fouling back into the action, allowing the weapon to run longer, with less maintenance and with less wear on internal components than direct-impingement ARs. Its adjustable gas regulator allows the operator to tune the action specifically for suppressed or unsuppressed operation. Fully ambidextrous controls, lighter weight and a slimmer profile make the new A4 easier to operate, manipulate and employ.
(1) 30rd Magazine
UPC
642230269408
Action
GAS PISTON
Finish
BLACK ANODIZED
Weight
7.67 LBS.
Caliber
5.56X45MM NATO
Capacity
30 ROUNDS
Barrel Length
16.5
Frame Material
ALUMINUM
Threaded Barrel
YES
Receiver Material
ALUMINUM
WARNING! This product contains chemicals known to the state of California to cause cancer and birth defects or other reproductive harm. For more information: www.p65warnings.ca.gov
FFL Transfer & Firearms Laws for HECKLER & KOCH MR556 A4 Rifles Semi Auto
All firearms, including the HECKLER & KOCH MR556 A4 Rifles Semi Auto, must be shipped to a licensed Federal Firearms License (FFL) dealer.
You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
Place your order online.
Provide your preferred FFL dealer information.
We ship the firearm directly to your FFL.
You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the HECKLER & KOCH MR556 A4 Rifles Semi Auto is legal in your state.
Some states may have restrictions on certain firearm models or features.
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.
Frequently Asked Questions About This Product
Why buy HECKLER & KOCH MR556 A4 Rifles Semi Auto from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy HECKLER & KOCH MR556 A4 Rifles Semi Auto?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is HECKLER & KOCH MR556 A4 Rifles Semi Auto available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
All firearms, including the HECKLER & KOCH MR556 A4 Rifles Semi Auto, must be shipped to a licensed Federal Firearms License (FFL) dealer.
A background check and any required local paperwork must be completed before you can take possession.
How It Works
Place your order online.
Send us your preferred local FFL dealer info.
We ship the firearm to your FFL after verification.
Complete background check and pick up from your dealer.
Legal Compliance
We comply with all U.S. firearm laws. It is your responsibility to ensure the HECKLER & KOCH MR556 A4 Rifles Semi Auto is legal in your state.
Some states (e.g. CA, NY, NJ) have restrictions on magazine size or certain features.
