Polarstar MR Regulator Airsoft S&W M&P40 Magazine Capacity: 120 Rounds /

Magazine Capacity: 120 Rounds / 70 Rounds (Mid Capacity)

making it more versatile and cross-compatible

Equipped with 3 compression springs on top

reinforced gears and long-type motor are full metal as well

Replace your springs and alter your FPS without opening up your gearbox

Polarstar MR Regulator Airsoft S&W M&P40 Magazine Capacity: 120 Rounds /Features Modular design with different output and pressure configurations to be available Simplistic design requires only 3 o rings promoting both reliability and ease of maintenance Adjustable output pressure from 40psi to 130psi (standard configuration) Integral tournament lock utilizes standard zip tie without the need for moving or additional parts Low profile design stands less than 2. 25" tall resulting in the entire regulator being more compact