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This H&K MR556 20-round magazine brings proven durability to a compact package that won't weigh you down like larger capacity options. Built in Germany to the same exacting standards H&K applies to their firearms, the magazine combines heavy-duty steel construction with an anti-friction maritime surface finish that resists corrosion and keeps things running smooth shot after shot.
The steel housing and metal follower make this magazine a tank compared to aluminum alternatives. Where some shooters sacrifice durability for weight savings, the MR556 steel mag trades nothing. The advanced spring material paired with precise production tolerances means you get the same reliable feeding whether you're at the range or relying on it for duty. The curved design feeds ammunition smoothly without the binding or tilting issues some shooters encounter with lesser magazines.
Originally developed by H&K for military platforms like the British SA80, this magazine design has been validated by elite U.S. special operations forces and foreign military units. The 20-round capacity gives you a balanced magazine that's easier to manage from a prone position or in tight spaces compared to 30-round options, making it popular with training enthusiasts and competitive shooters who appreciate the lower profile.
While designed for the H&K MR556 and HK416, this magazine works reliably in any AR-15, M-16, or M4-platform rifle that accepts NATO-standard 5.56x45mm magazines. The snug fit in the MR556 magazine well means you know what you're getting with HK factory components rather than guessing with aftermarket alternatives.
Yes. This magazine is designed to work with any rifle that accepts NATO-standard 5.56x45mm magazines, including AR-15, M-16, M4, and other STANAG-compatible platforms. While designed for the MR556, the reliable feeding and robust construction make it a solid choice across the platform family.
Steel magazines like this one are heavier but offer superior durability and are built to last a lifetime with proper care. The H&K steel construction with advanced spring material and metal follower delivers consistent, reliable feeding that appeals to those who prioritize dependability over weight savings. The trade-off is that multiple steel magazines will add noticeable weight to your loadout.
The maritime surface finish is H&K's proprietary corrosion-resistant coating that resists saltwater and harsh environments. The anti-friction design means the magazine feeds smoothly without binding, and the coating makes it easier to eject while protecting the steel from rust and wear. It surpasses military salt fog testing standards.
This magazine works great for either. The 20-round capacity is actually preferred by many range shooters and competitors because it gives you a lower profile mag that's easier to manage from a prone position. Many keep these as dedicated range mags while rotating other capacity options for different use cases.
| UPC | 642230245334 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 233609S |
| Shipping Weight | 0.458 |
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