RetroArms CNC Gearbox for SR25 – QSC Version Blowback Units hardened steel

hardened steel

and FPS consistency

Made in the Czech Republic by RetroArms

the cylinder features a polished inner surface to reduce friction and wear on the piston

Bearing Type: Dual Ball Bearings

RetroArms CNC Gearbox for SR25 – QSC Version Blowback Units hardened steelThe RetroArms CNC Gearbox for SR25 QSC (Quick Spring Change) is a precision engineered upgrade designed for serious airsoft techs and players who demand maximum performance and reliability. Machined from a single block of aircraft grade aluminum (EN AW 7075 T6), this gearbox shell provides exceptional strength and dimensional accuracy, making it ideal for high stress builds including high FPS DMR setups. This version includes RetroArms renowned QSC