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Ships within 48 hours · Estimated delivery Sep 17 - Sep 22
Velocity: 300 - 330 FPS w/ 0
If buying this with a Polarstar rifle from KA Tech Airsoft it will come pre tuned for that specific rifle
introducing the “Bank Saver” the first professionally built and tuned HPA rifle to drop below $450 in the Airsoft market
low deviation
Performance Series - MP5 MID Pressure Piston (450-550psi) Buffer Tube Velocity: 300 - 330 FPSUpgrade 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
