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High speed 140 rd Mid-Cap magazine
barrel nut
Refresh your comfort and performance with the HK Army RMX Foam Kit
safeguarding against dirt and debris from building up in the air fill valve
Performance Series - MP5 MID Pressure Piston (450-550psi) PEQ-15 High speed 140 rd Mid-CapUpgrade your HK Army Performance Series Regulator with the MP5 (Mid Pressure 500psi). Piston. These pistons come equipped with Belleville Shim Stack, designed for precision and ease of use. This innovative component allows you to adjust the output pressure of your regulator quickly and efficiently without needing to purchase an entirely new regulator unit. Simply pull out the entire shim stack unit and drop it into your regulator for seamless
