Take your air system to the next level with the HK Army MP5 Mid Pressure Piston, engineered for the Performance Series Regulator. Built with a durable brass piston and equipped with a Belleville shim stack, this upgrade gives you precision tuning, reliable performance, and a hassle-free installation.
Instead of buying a brand-new regulator, the MP5 piston allows you to quickly adjust your output pressure to 450–550psi, perfect for players who demand a mid-pressure paintball regulator setup. Simply remove your existing shim stack unit and drop in the MP5 piston for seamless performance on the field.
Why Choose the MP5 Mid Pressure Piston?
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Mid Pressure Output – Pre-set for 450–550 psi, giving you versatility and consistent airflow.
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Belleville Shim Stack – Compact disc springs deliver powerful, precise pressure control without the bulk of traditional coil springs.
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Quick Swap Design – The complete shim stack unit is easy to remove and replace in minutes.
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Durable Brass Piston – Long-lasting construction with all required O-rings included for a leak-free seal.
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Restores Performance – Perfect for replacing a worn-out piston system and maintaining consistent regulator output.
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Compatibility – Specifically designed for HK Army Performance Series Regulators.
Important: Always ensure your air system is completely degassed before installing or servicing your regulator to avoid injury or equipment damage.