Availability: In Stock
The ProMag COLA9B is a 20-round AR-15/M16 magazine built for shooters who want reliable mid-capacity performance without breaking the budget. Chambered in .223 Rem and 5.56 NATO, this polymer magazine delivers the capacity many riflers prefer for range sessions, training, and tactical applications where a full 30-round setup isn't necessary. Whether you're running a modern AR platform or vintage M16-pattern rifle, the COLA9B feeds and functions with the same dependable spring and follower design you'd expect from a workhorse magazine.
ProMag engineered this magazine around DuPont Zytel polymer, a material proven in demanding conditions to resist impact and UV exposure while staying lightweight. The black finish blends seamlessly with most AR builds, and the injection-molded construction keeps costs down without sacrificing the core function of reliable feeding. The follower and heat-treated chrome silicon spring are the guts that matter—they're engineered to handle thousands of cycles and the pressure cycling that comes with serious use.
The 20-round capacity slots nicely between standard 30-round mags and small-capacity match magazines, making it a smart addition to your magazine rotation. Reload time is longer, sure, but many shooters appreciate the balance of firepower and ergonomics during precision practice or when you're carrying multiple loaded mags. Made in the USA, the COLA9B represents ProMag's no-nonsense approach to AR accessories—solid function at a price that makes sense.
| Product Name | ProMag COLA9B 20-Round AR-15/M16 Magazine |
| Caliber | .223 Rem / 5.56 NATO |
| Capacity | 20 rounds |
| Platform Compatibility | AR-15 / M16 |
| Material | DuPont Zytel polymer |
| Follower Type | Injection-molded |
| Spring Material | Heat-treated chrome silicon wire |
| Finish | Black |
| Country of Origin | USA |
Yes. The COLA9B is designed to fit and feed reliably in both AR-15 and M16 platforms chambered in .223 Rem or 5.56 NATO.
The body is constructed from DuPont Zytel polymer, a durable material that resists impact and environmental stress. The follower is injection-molded, and the spring is formed from heat-treated chrome silicon wire.
Yes, the ProMag COLA9B is manufactured in the USA.
A 20-round capacity works well for precision shooting, training drills, and situations where you want to balance firepower with ergonomics and reload discipline. Many shooters also keep 20-round mags on hand as part of a varied magazine rotation.
SKU: 115789132 • Width: 3.9in • Height: 1.2in • Depth: 11.1in • Weight: 0.35oz
Availability: In Stock
The ProMag COLA9B is a 20-round AR-15/M16 magazine built for shooters who want reliable mid-capacity performance without breaking the budget. Chambered in .223 Rem and 5.56 NATO, this polymer magazine delivers the capacity many riflers prefer for range sessions, training, and tactical applications where a full 30-round setup isn't necessary. Whether you're running a modern AR platform or vintage M16-pattern rifle, the COLA9B feeds and functions with the same dependable spring and follower design you'd expect from a workhorse magazine.
ProMag engineered this magazine around DuPont Zytel polymer, a material proven in demanding conditions to resist impact and UV exposure while staying lightweight. The black finish blends seamlessly with most AR builds, and the injection-molded construction keeps costs down without sacrificing the core function of reliable feeding. The follower and heat-treated chrome silicon spring are the guts that matter—they're engineered to handle thousands of cycles and the pressure cycling that comes with serious use.
The 20-round capacity slots nicely between standard 30-round mags and small-capacity match magazines, making it a smart addition to your magazine rotation. Reload time is longer, sure, but many shooters appreciate the balance of firepower and ergonomics during precision practice or when you're carrying multiple loaded mags. Made in the USA, the COLA9B represents ProMag's no-nonsense approach to AR accessories—solid function at a price that makes sense.
| Product Name | ProMag COLA9B 20-Round AR-15/M16 Magazine |
| Caliber | .223 Rem / 5.56 NATO |
| Capacity | 20 rounds |
| Platform Compatibility | AR-15 / M16 |
| Material | DuPont Zytel polymer |
| Follower Type | Injection-molded |
| Spring Material | Heat-treated chrome silicon wire |
| Finish | Black |
| Country of Origin | USA |
Yes. The COLA9B is designed to fit and feed reliably in both AR-15 and M16 platforms chambered in .223 Rem or 5.56 NATO.
The body is constructed from DuPont Zytel polymer, a durable material that resists impact and environmental stress. The follower is injection-molded, and the spring is formed from heat-treated chrome silicon wire.
Yes, the ProMag COLA9B is manufactured in the USA.
A 20-round capacity works well for precision shooting, training drills, and situations where you want to balance firepower with ergonomics and reload discipline. Many shooters also keep 20-round mags on hand as part of a varied magazine rotation.
SKU: 115789132 • Width: 3.9in • Height: 1.2in • Depth: 11.1in • Weight: 0.35oz