Description
ProMag COL21 Standard is a flush fit AR-15 magazine made for .223 Rem/5.56 NATO rifles. It holds 5 rounds and is built with heat treated steel. The follower is injection molded, and the magazine spring is formed from chrome silicone wire.
- Flush fit replacement or spare magazine for AR-15 rifles
- Heat treated steel body construction
- Injection molded mag follower and chrome silicone wire spring
- 5-round capacity
| Capacity | 5 rounds |
|---|---|
| Caliber | .223 Rem/5.56 NATO |
| Fits | AR-15 |
| Material | Steel |
| Finish | Blued |
| Model | COL21 Standard |



