HK416 / MR556 30-Round Steel Magazine — 5.56mm | Genuine HK (Part #251770S)
HK416 / MR556 30-Round Steel Magazine — 5.56mm | Genuine HK (Part #251770S)
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Factory-built reliability for every HK
Genuine Heckler & Koch steel 30-round magazine designed for HK416 and MR556 rifles. Built in Germany to HK’s exacting standards, this magazine delivers reliable feeding, rugged durability, and precise fitment for OEM performance in service and range rigs.
Key Features
- Genuine HK factory part — Part #251770S
- 5.56×45 NATO, 30-round capacity
- Durable steel construction for long life and rugged use
- Engineered for perfect fit with HK416 / MR556 platforms
- Tested for reliable feeding and consistent function
Add authentic HK quality to your build — Order now while in stock.
Compatible With:
- HK416 / MR556 / MR223
- AR-15
- Any Firearm that uses NATO-Standard 5.56mm Magazines
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Let customers speak for us
from 62 reviewsA hard to find item which you had in stock. Order placed in the am and shipped the same day. Quality parts and outstanding service!
Shipped same day and was exactly as described! Yall are awesome! Cant wait to buy more stuff!
Heavy duty and well machined.
This company is great! Marvin is an artist, orders sometimes will take a while but rest assured when you do get it, it will be perfect, so if youre a potential customer, be patient. It will be done
I enjoyed all the products so far. I plan to purchase more products in the future, keep up the good work!
I used this tool to build a Nefarious Arms A3 IAR barrel on an MR556 upper, and it was absolutely perfect for the job. It easily held under the required torque specs with zero barrel shift. More importantly, it eliminated any worry about shearing off the index pin, ensuring near-perfect timing after installation.Before this, I attempted to use a Midwest Industries Reaction Rod but found way too much play. The MR556 platform demands tight tolerances, and a generic reaction rod simply doesn't offer the precision needed. Because this tool is made specifically for these barrels, the fit is exact. If you are doing an MR556 build, this is the tool you need.