HK416, MR556 PDW Piston Rod, Complete Assembly
HK416, MR556 PDW Piston Rod, Complete Assembly
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The HK416 / MR556 PDW Piston Rod Complete Assembly is a factory-original Heckler & Koch OEM part, professionally modified for the PDW (Personal Defense Weapon) configuration. Built to maintain proper gas timing and reliable cycling in short-barrel HK setups, this assembly delivers the same legendary HK performance in a compact form factor.
Key Features:
- Factory OEM HK part — genuine Heckler & Koch manufacture
- Modified specifically for HK416 / MR556 PDW configurations
- Precision-machined and heat-treated for durability
- Ensures proper gas operation in short-barrel systems
- Complete and ready to install — no fitting required
Built for reliability. Order your HK416 / MR556 PDW Piston Rod Complete Assembly today.
Compatible with:
- HK 416 PDW
- HK MR556 PDW
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So far so good. Fits great! Great products! Been running there barrels for a couple years!
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.