Spring Set for Gen8 or V2 Gearbox

Customize your FPS with this 4-spring set, offering multiple power levels for JM Gen8-10, HLF UMP, ZH M249, and other V2 gearbox blasters!

✔ Two Compatibility Options:

• Gen8 Type (Fits J8/J13/XM316/UMP/M249/M16)

• Gen9/10 Type (Standard V2 Gearbox)

✔ Four Performance Levels:

• M90 Equivalent (CQB-safe)

• M100 (Field balance)

• M110 (High power)

• M120 (Maximum FPS)

Why This Kit Wins:
• Solve FPS creep from worn springs
• Tune for indoor/outdoor play
• Includes backup springs

Package Includes:
4x Silver Alloy Springs