The Russian-made Izhmash Rear Block for Side Folding Stocks (Stamped Receiver) and Folding Polymer Buttstock recreate one of the most recognizable configurations in the Kalashnikov family.
These original components give builders the opportunity to convert a stamped AK receiver into a factory-style AK-100 series side-folder using authentic Russian parts.
Authenticity starts long before the stock locks into place. It starts with the components you choose.
The Rear Block Sets the Standard
Folding stocks usually get all the attention, but the rear block determines how the entire conversion comes together.
Designed for stamped AK receivers with a 5.5 mm pivot pin, Izhmash’s Rear Block establishes the correct mounting point for the folding stock assembly. That foundation affects everything that follows.
Proper geometry helps the stock align correctly with the receiver, lock into position with confidence, and preserve the clean profile that defines factory Russian side-folding rifles.
Builders often spend countless hours selecting barrels, furniture, and accessories, yet the rear of the receiver deserves the same kind of consideration.
Starting with the proper rear block eliminates unnecessary compromises and keeps the conversion faithful to the original AK-100 series pattern.
For those chasing authenticity, that’s a meaningful advantage. Rather than adapting universal aftermarket hardware, they can build around the same engineering principles that shaped Russian military-pattern rifles from the start.
Complete the Build with an Authentic Russian Folding Stock
Once the rear block is in place, Izhmash’s Folding Polymer Buttstock completes the conversion with the same factory-first approach.
The stock reflects the straightforward engineering that made Kalashnikov rifles famous worldwide. Its durable polymer construction keeps weight under control without sacrificing the rugged characteristics shooters expect from the platform.
Folded, the stock shortens the rifle for easier transport and storage.
Extended, it restores the familiar shooting position that’s made side-folding AKs a favorite among collectors, builders, and enthusiasts alike. The result feels intentional because every element serves a practical function.
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The 5.5 mm design matches the corresponding rear block, creating a conversion built around factory specifications instead of mixed aftermarket dimensions.
This consistency gives the finished rifle a cohesive appearance while preserving the unmistakable silhouette of a Russian AK-100 series side-folder.
Why Original Izhmash Parts Stand Apart
The AK aftermarket offers no shortage of replacement components, but genuine Russian-made Izhmash parts continue to attract builders who value authenticity as much as craftsmanship.
Original factory components preserve the dimensions, materials, and design standards developed for the Kalashnikov platform itself. Those details influence the finished rifle in subtle but important ways, from overall fit to visual consistency.
Builders restoring Russian-pattern rifles, completing clone builds, or upgrading stamped receivers often choose original components.
They want the finished firearm to honor its heritage, not simply imitate its appearance. Genuine Izhmash parts preserve the factory dimensions, engineering, and character that have earned the respect of AK enthusiasts for decades.
Building an AK-100 Series Inspired Rifle
A side-folder conversion succeeds long before the stock locks into place. It starts with selecting components that adhere to the original design rather than forcing aftermarket solutions to work together.
Izhmash’s Rear Block for Side Folding Stocks and Folding Polymer Buttstock were built around the same engineering standards that shaped the AK-100 series.
Together, they offer builders an authentic path toward a factory-style conversion using genuine Russian components.
Whether you’re restoring a Russian-pattern rifle, completing a clone build, or upgrading a stamped receiver, quality starts with the foundation. Choose the right parts first, and the rest of the build naturally follows.
K-Var proudly offers genuine Izhmash rear blocks and folding polymer buttstocks for builders pursuing an authentic AK-100-series-style conversion.
If you have questions about compatibility, fitment, or selecting the right components for your build, our team is here to help.
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