ProMag COLA18B StandardBlack DuPont Zytel Polymer Detachable 30rd for 223 Rem, 5.56x45mm NATO AR-15/M16
$12.64
$16.99
(You save
$4.35
)
- Capacity-Rounds:
- 30
- Type:
- Magazines
- Firearm Group:
- AR Platform
- Caliber-Gauge:
- 223 Remington / 5.56 NATO
- Finish-Color:
- Black
- Model:
- Standard
- Material:
- DuPont Zytel Polymer
- Model Fit:
- AR-15
The ProMag COLA18B is a 30-round detachable magazine built for AR-15 and M16 platforms running .223 Rem. or 5.56x45mm NATO. If you run an AR and want reliable, cost-effective magazines that won't break the bank, this is solid backup—or primary—ammunition storage. Constructed from DuPont Zytel polymer, it's engineered to handle the rigors of regular use while keeping weight and expense down compared to aluminum alternatives.
The magazine's heat-treated chrome-silicon wire spring pairs with an injection-molded follower to ensure consistent, dependable feeding cycle after cycle. Polymer magazines have earned their place in the AR platform ecosystem: they're proven to work, they don't corrode, and they're light enough that carrying a few extras doesn't slow you down on the range or in the field.
Whether you're stocking up for a day at the range, building out a patrol rifle, or just want spares for your duty or hunting AR, the COLA18B delivers straightforward, no-frills functionality. Black finish blends with most AR builds and accessories.
Key Features
- 30-round capacity for .223 Rem. and 5.56x45mm NATO
- DuPont Zytel polymer construction for durability and lightweight handling
- Heat-treated chrome-silicon wire spring for consistent feeding
- Injection-molded follower designed for reliable ammunition seating
- Compatible with standard AR-15 and M16 platforms
- Black finish
Specifications
| Brand | ProMag |
| Model | COLA18B |
| Caliber | .223 Rem. / 5.56x45mm NATO |
| Capacity | 30 rounds |
| Material | DuPont Zytel Polymer |
| Spring | Heat-treated Chrome-Silicon Wire |
| Follower | Injection-Molded |
| Finish | Black |
| Platform Compatibility | AR-15 / M16 |
Frequently Asked Questions
Will this magazine work with my AR-15?
Yes. The ProMag COLA18B is designed for standard AR-15 and M16 platforms and accepts .223 Rem. and 5.56x45mm NATO cartridges.
What's the capacity?
The COLA18B holds 30 rounds.
Why polymer over aluminum?
Polymer magazines like this one are lighter, won't corrode, and cost less than aluminum alternatives while delivering proven durability and reliable feeding through the same magazine well.
What keeps the rounds feeding reliably?
The magazine uses a heat-treated chrome-silicon wire spring paired with an injection-molded follower, both engineered to provide consistent ammunition seating and feeding performance.
