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Promag
The ProMag COL27 is a 10-round detachable magazine built for Colt M4 rifles chambered in .22 LR. If you run a rimfire M4 for small-game hunting, backyard plinking, or casual range time, a reliable spare mag means more trigger time and less fumbling with ammo. ProMag's polymer construction keeps weight down and cost low—useful when you want backup capacity without breaking the bank.
Built from DuPont Zytel polymer, the COL27 is tough enough for field use and light enough that carrying extras won't bog you down. The detachable design swaps in and out smoothly, and the standard black finish blends into any setup. With a 10-round capacity, you'll get meaningful trigger time between reloads without the bulk of larger magazines.
Whether you're zeroing a new .22 LR upper, running steel plates at the range, or teaching a younger shooter, having a second or third magazine on hand just makes sense. Rimfire shooting is supposed to be fun—good magazines are part of the equation.
| Manufacturer | Pro Mag |
| Model | COL27 |
| Caliber | .22 LR |
| Capacity | 10 rounds |
| Fit | Colt M4 |
| Type | Detachable |
| Material | DuPont Zytel Polymer |
| Finish | Black |
Yes. The COL27 is designed specifically for Colt M4 rifles chambered in .22 LR. Verify that your rifle is a rimfire model before purchasing.
The COL27 holds 10 rounds of .22 LR ammunition.
The COL27 is constructed from DuPont Zytel polymer, a durable engineered plastic that resists impact and environmental stress while keeping weight minimal.
Yes. The COL27 is a detachable magazine that removes and installs easily for quick magazine changes and cleaning.
Promag
The ProMag COL27 is a 10-round detachable magazine built for Colt M4 rifles chambered in .22 LR. If you run a rimfire M4 for small-game hunting, backyard plinking, or casual range time, a reliable spare mag means more trigger time and less fumbling with ammo. ProMag's polymer construction keeps weight down and cost low—useful when you want backup capacity without breaking the bank.
Built from DuPont Zytel polymer, the COL27 is tough enough for field use and light enough that carrying extras won't bog you down. The detachable design swaps in and out smoothly, and the standard black finish blends into any setup. With a 10-round capacity, you'll get meaningful trigger time between reloads without the bulk of larger magazines.
Whether you're zeroing a new .22 LR upper, running steel plates at the range, or teaching a younger shooter, having a second or third magazine on hand just makes sense. Rimfire shooting is supposed to be fun—good magazines are part of the equation.
| Manufacturer | Pro Mag |
| Model | COL27 |
| Caliber | .22 LR |
| Capacity | 10 rounds |
| Fit | Colt M4 |
| Type | Detachable |
| Material | DuPont Zytel Polymer |
| Finish | Black |
Yes. The COL27 is designed specifically for Colt M4 rifles chambered in .22 LR. Verify that your rifle is a rimfire model before purchasing.
The COL27 holds 10 rounds of .22 LR ammunition.
The COL27 is constructed from DuPont Zytel polymer, a durable engineered plastic that resists impact and environmental stress while keeping weight minimal.
Yes. The COL27 is a detachable magazine that removes and installs easily for quick magazine changes and cleaning.
