SRC Airsoft M140 Spring Upgrade UP-43

$13.95


SRC Airsoft M140 Spring Upgrade UP-43

We are not responsible for improper upgrades or damage caused to inadequate airsoft gun internals. Airsoft upgrades void any warranty on guns purchased from our store.

Upgrade or replace your airsoft electric gun spring with this high-quality spring from Star Rainbow Corp (SRC). Fits most TM, CA, & SRC airsoft electric guns. Increases airosft muzzle velocity 430-470 fps depending on barrel length. Requires opening gearbox to upgrade.

Note: Airsoft upgrades will void most AEG Warranties and will increase wear and tear on the gearbox and internal parts. Do all upgrades at your own risk.

We recommend matching this with a higher torque motor and reinforced gearbox.  Consult the various Airsoft forums for more information on higher-tension spring upgrades.

 This items is for Airsoft use only. It Cannot be used in real firearms.

FREE SHIPPING TO USA ONLY
International Shipping Available, eMail us for a quote

All Sales Final. Returns on Defective Merchandise only (See store return policy).  Shipping includes tracking and insurance.

*Georgia Residents add 7% Sales Tax*


Add to Cart:

  • Model: UP-43
  • Manufactured by: SRC




All airsoft guns are required, by law, to have a permanent fixed blaze orange tip (minimum 6mm). All Airsoft Guns sold by OnTarget Airsoft have the blaze orange tip. Do not remove, paint over, or alter the blaze orange tip; it is there for your safety.


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