JS Tactical M90 Spring | FREE Delivery over €50 (ROI)

This is the main-spring of an AEG gearbox, and is the primary factor in determining the power of your gun. The exact output differs from gun to gun, gearbox to gearbox, due to differences in size, parts (bearing piston guide etc), compression (how good your air seal is), as well as your barrel & hop combination.

These are usually used for downgrades/repairs, if you need to bring a gun under (or bring back to) the legal limit (especially if your air seal is nigh on perfect). If you are unsure what spring to go for, please don't hesitate to ask.

Please note, as with all upgrade parts, installation can be a bit tricky - always take your time, and if unsure seek the aid of a professional.