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MEAN Arms ExoMag 20-Round 5.56/.223/9mm Magazine with Ejector
The MEAN Arms ExoMag 20-Round 5.56/.223/9mm Magazine is a 20-round 9mm magazine designed to work with a standard AR-15 lower. Pair it with a compatible 9mm complete upper and 9mm ammunition to convert your existing AR-15 lower to 9mm without a magwell block, adapter, or tools. The ExoMag accepts 9mm ammunition only and is not compatible with 5.56 NATO or .223 ammunition.
The ExoMag features an integrated ejector arm with a metal tip, providing the ejector needed for compatible 9mm configurations. Its STANAG magazine outer shape provides a familiar AR-15 magazine feel and fits standard AR-15 magazine carriers.
Key Features:
- 20-round capacity
- 9mm magazine
- Works with a standard AR-15 lower
- Designed for use with a compatible 9mm complete upper
- Integrated ejector arm with metal tip
- Last-round bolt-hold-open feature
- No magwell block or adapter required
- No tools required
- STANAG magazine outer shape
- Fits standard AR-15 magazine carriers
- Compatible with 9mm ammunition, including hollow points
Note: The 5.56/.223/9mm designation in the product name refers to the AR-15 platform and caliber-conversion application, not ammunition compatibility. The ExoMag is a 9mm magazine.
| SKU | EXO-223-556-9MM |
|---|---|
| Weight (lbs) | 0.700000 |
| Manufacturer | MEAN Arms |
| Magazine Capacity | 20 Round Magazine |
| Caliber | 9MM |
| Flutes | Non-fluted |
| Classification | Magazine |
| Platform | AR-15 |
| Choke Tubes | No |



















