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CYMA M4/M16 320R Steel Hi-Cap Magazine

CYMA M4/M16 320R Steel Hi-Cap Magazine

£8.95
£8.95
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DETAILS

SKU: 85091370
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A steel shell, not polymer. CYMA list this one specifically as a steel hi-cap, which is the reason to pick it over the cheaper moulded magazines sitting next to it on the shelf.

Hi-caps earn their place in a particular way. You wind the wheel, you get a few hundred rounds without touching a pouch, and you accept the rattle and the winding in exchange for not reloading. For anyone running a support role or a long defensive position, that trade is usually worth making.

The steel shell is the part that matters over a season. A polymer magazine lip spreads slightly every time it is seated hard into a magwell, and once it does the magazine starts sitting low and feeding badly. Steel takes that abuse without changing shape, which is why steel hi-caps tend to outlast the gun they were bought for.

It is a standard M4 and M16 fit, so it drops into the AR-15 pattern AEGs most people already own rather than needing a particular brand of receiver.

Specifications

Specification Detail
Platform M4 / M16, AR-15 pattern AEG
Type Hi-cap, winding
Capacity 320 rounds
Shell material Steel
Finish Black
Brand CYMA

Looking after it

CYMA give three instructions with this magazine and they are worth following, because a neglected hi-cap jams and a maintained one does not. Oil it with silicone oil before you use it for the first time. Keep oiling it from time to time. And when you put it away, put it away empty.

Frequently asked questions

How many rounds does it actually hold? CYMA rate it at 320. As with any hi-cap, treat the rated figure as the ceiling rather than a daily target, and it will feed more reliably.

Will it fit my M4? It is built to the standard M4 and M16 magazine well, so AR-15 pattern AEGs are the intended fit. If your gun uses a proprietary magwell, check before buying several.

Why choose steel over polymer? The shell keeps its shape. Polymer feed lips can spread with hard seating, and a magazine that sits low stops feeding cleanly.

Should I store it loaded? No. CYMA specifically say to store it empty, which also takes the tension off the feed spring between games.

⚠ Oil it before first use. This is not optional advice from us, it is CYMA's own instruction. A dry hi-cap feed wheel is the most common reason one of these stops working, and a drop of silicone oil before the first game prevents it.
💡 Titan Forge Airsoft tip: Buying one magazine tells you whether it feeds in your gun; buying six before you have tested one is how people end up with a drawer of magazines that do not. Start with one, then come back for the set from our rifle magazines range.