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m95 progressive spring

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Overview

The Action Army M95 AEG Progressive Spring is a main spring for airsoft electric gun gearboxes, aimed at players who want a controlled and repeatable step up in power. The M95 rating delivers roughly 290 to 370 FPS on 0.20g BBs, with a common baseline around 310 FPS depending on the rest of your setup.

Progressive pitch explained

Unlike a plain linear spring, this spring uses a non-linear, progressive pitch. The variable coil spacing smooths out compression and helps deliver a more consistent shot, which is why techs favour progressive springs for tidy, predictable builds.

Materials and durability

It is wound from oil-tempered high-carbon steel and polished, so it resists sag and fatigue over long-term use. That means your FPS stays where you set it rather than drifting downward after a few thousand rounds.

Fitting and safety

The spring suits standard Version 2 and Version 3 AEG gearboxes. A spring change is internal work, so if you are not confident stripping a gearbox our Kent airsoft repair and servicing team can fit and chronograph it for you. Always re-chronograph against your site’s limits after any power change. Explore more airsoft accessories and upgrade parts.

General
BrandAction Army
Other
TypeAEG main spring
RatingM95
MaterialOil-tempered high-carbon steel
CompatibilityStandard Version 2 / Version 3 AEG gearboxes
Approx FPS290 to 370 FPS on 0.20g BBs
PitchProgressive / non-linear
FinishPolished
ApplicationAEG FPS and power upgrade
Nominal referenceAround 310 FPS baseline for M95

Frequently asked questions

What FPS will the M95 spring give me?

As a guide, an M95 spring produces roughly 290 to 370 FPS on 0.20g BBs, with a common baseline near 310 FPS. Actual output depends on your cylinder, inner barrel, nozzle and air seal, so figures vary between builds.

What does progressive or non-linear mean?

The coils are wound with variable spacing rather than an even pitch. This gives smoother compression and can help consistency and shot-to-shot stability compared with a plain linear spring.

Which gearboxes does it fit?

It is designed for standard AEG main-spring use and fits common Version 2 and Version 3 gearboxes. Always confirm your gearbox type and site FPS limits before fitting a higher-power spring.

Do I need to chronograph after fitting?

Yes. Any spring change must be checked over a chronograph against your site's FPS and joule limits before you skirmish, as output varies with the rest of your build.

Is this spring compatible with an anti-reversal cutoff or short stroke?

Yes, it is a standard main spring and can be paired with short-stroke or upgraded internals, but power and rate of fire will change, so re-chronograph after any such work.