HK416 / MR556 / G36 Complete Gas Piston #50205381

Name: HK416 / MR556 / G36 Complete Gas Piston #50205381
Brand: Heckler & Koch
Price: 50.00 USD
Availability: InStock

HK416 / MR556 / G36 Complete Gas Piston #50205381

$50.00 USD

Sale Sold out

Shipping calculated at checkout.

14 in stock

Genuine HK quality for compact and full-length builds.

The HK416 / MR556 / G36 Complete Gas Piston is a genuine Heckler & Koch OEM unit, made in Germany and supplied as a fully assembled piston. Engineered and finished to HK tolerances, it maintains correct gas timing for G36-spec systems and HK builds that require a G36 piston. Ships ready to install.

Key Features:

Genuine Heckler & Koch OEM part #50205381
Made in Germany
Complete, ready-to-install piston assembly
Precision-machined and heat-treated for durability
Maintains correct gas timing

Compatible with:

HK 416
HK MR556
HK MR762
HK 417
HK G28
HK SL8, SL8-6, SL8-1
HK G36 Full-Size

View full details

Let customers speak for us

from 42 reviews

Jake

04/16/2026

Very high quality and definitely adds pressure to the system.

Enhanced Reliability Gas Piston

Sal

03/10/2026

Top notch work and awesome service!

Custom Barrel Dimpling

Meridian Ordnance LLC

03/06/2026

Excellent option for the MR556A4 and 416 clones.

Nefarious Arms HK416 / MR556 Barrel, 14.5" LIGHT, 5.56x45mm NATO

Sextus

03/04/2026

Marvin and his products are top notch. Perfect fitment, excellent quality. These are the best barrels outside fo factory HK that one can buy!

Nefarious Arms HK416 A5 / G38 Barrel, 11", 5.56x45mm NATO

Rick

03/03/2026

Excellent parts / tools and fast shipping service

Nefarious Arms

Rick

03/03/2026

For your barrel nut torquing a must have precision made tool. Excellent machined quality to use on a number of AR , KAC , Centurion Arms or HK variants.
Nicer than other popular and similar tools I have. protect your barrel extension index pin! Get one!

Reaction Rod – Armorer’s Multi-Platform Upper Receiver Holding Tool