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PST-7 Suppressor End Cap

The PST-7 Suppressor End Cap is a critical component of the PST-7’s forward-venting, low-backpressure architecture. Designed specifically to work with the suppressor’s three-chamber, helical monolithic core, the end cap controls the final stage of gas release, shaping both sound signature and tone. Precision-machined to maintain concentric alignment, the PST-7 end cap features forward exhaust ports that allow expanding gases to exit cleanly from the front of the suppressor. This design helps prevent pressure from being reflected back into the suppressor body or host weapon system—supporting reduced blowback, cleaner operation, and improved shooter comfort.

The port geometry has been optimized to balance sound suppression, tone, and pressure management, ensuring consistent performance across a wide range of semi-automatic 7.62 platforms. As part of the PST-7’s serviceable design, the end cap is easily removable for inspection, cleaning, or replacement, while maintaining secure, repeatable alignment when reinstalled. Built to work as part of the system—not an afterthought—the PST-7 Suppressor End Cap completes the suppressor’s forward-venting gas path and plays a key role in delivering balanced, modern suppression performance.  Manufactured out of hardened 4140 CrMoV Steel and QPQ Salt Bath Nitrided for corrosion resistance.

Installation and Removal instructions can be found on page 11 of the PST-7 OWNER’S MANUAL.