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.











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.