HK Army MP5 Piston (450-550 psi)

Features:

• Mid Pressure Output: This piston shim stack is preset to make the regulator output pressure 450-550psi.

• Belleville Shim Stack: Belleville Shims (or disc springs) can provide a significant amount of force in a compact space. This compactness allows for a more streamlined and lightweight design compared to traditional coil springs.
• Quick and Efficient Swap: The entire shim stack unit can be quickly pulled out and replaced.
• Brass Piston: Durable construction with necessary O-rings for leak-free performance.
• Consistent Output Pressure: Ideal for replacing worn-out piston systems to restore regulator performance.
• Compatibility: Specifically designed for HK Army Performance Series Regulators.

Caution: Ensure the air system is completely degassed before making any updates to the regulator to avoid injury or damage.