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Ships within 48 hours · Estimated delivery Jul 27 - Aug 1
Installation instruction (if included)
Compatibility: SR25 / long-type AEG platforms
Made in the Czech Republic by RetroArms
the cylinder features a polished inner surface to reduce friction and wear on the piston
Some minor fitting or adjustments may be required for perfect fit on certain aftermarket frames
RetroArms CNC Gearbox for SR25 – QSC Version Blowback Units Installation instruction (if included)The 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