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Established 2006. Kent's Only Authorised 5.11 Tactical Retailer

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Conor

Gun: Double Eagle M904F

These fit very nicely in to the gun and there no movement or loose fitting. The build is sturdy and the metal shell gives it a bit of bulk, meaning you won’t feel like you are tossing around plastic.

My only complaint is that it doesn’t feed the last few bbs. I reckon about 5 to 10 of the last BBs don’t make it up in to the firing mechanism, making this more or a 130 round in my case. I haven’t found the reason, possibly the internal spring mechanism is too short, but for the price and build, a few missing BBs isn’t too bad, and as they don’t leave the Mag, you can easily get them back out again and put them back in your BB pot or speed loader.

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Realistic, rattle-free feeding

The Evolution 140rd Metal Mid-Cap Magazine gives you a genuine mid-cap experience: a sensible 140-round capacity, silent operation and no annoying rattle to give your position away. For players who want their kit to look and feel closer to the real thing, a mid-cap strikes the ideal balance between capacity and realism.

No winding, just shoot

Instead of a winding wheel, this magazine relies on a pre-tensioned high-tension spring inside the feed chamber. That means smooth, consistent feeding straight out of the gun with none of the fuss of re-tensioning mid-game, and a more precise feed than many hi-cap alternatives.

Tough metal construction

The metal body is built to survive the reality of skirmish play, standing up to repeated magazine changes, drops and knocks far better than lighter polymer shells. Inside, plastic internals keep the feeding action smooth over the long term.

Fits M4 and M16 AEGs

With its STANAG profile, the magazine drops into M4 and M16 series AEGs, including Evolution Recon, Ghost and E416 rifles and other compatible platforms. Fill it fast with a speed loader from our airsoft accessories range, and stock up on ammunition in our BBs, gas and batteries section.

Bought from the specialists: our in-house workshop in Rochester, Kent can service, repair and upgrade your kit. See our airsoft gun repair and servicing.

General
BrandEvolution International
ColourBlack
Other
TypeMid-cap
Capacity140 rounds
Body materialMetal
InternalsPlastic
ProfileSTANAG
CompatibilityM4, M16, Recon, Ghost and E416 AEGs
Feed systemHigh-tension spring, no winding
LoadingSpeed loader required
Calibre6mm BB

Frequently asked questions

Do I need to wind this magazine?

No. Unlike a hi-cap, this mid-cap uses a pre-tensioned high-tension spring, so BBs feed reliably without any winding wheel to turn.

Do I need a speed loader to fill it?

Yes. Mid-cap magazines load through the feed lips, so a speed loader makes filling quick and easy. We stock speed loaders in our airsoft accessories range.

Which rifles does it fit?

It uses a STANAG profile and fits M4 and M16 series AEGs, including Evolution Recon, Ghost and E416 replicas and other STANAG-compatible guns.

Why choose a mid-cap over a hi-cap?

Mid-caps feed silently with no rattle and give a more realistic mag-change experience, which many players prefer for milsim and skirmish play.

Is the metal body worth it?

Yes. The metal casing is more durable than polymer, resisting dents and wear from repeated reloads and rough handling on the field.