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The ProMag COLA27 is a straightforward magazine built around what matters most when you're running a 6.8mm SPC AR-15. At 27 rounds, you're getting serious magazine capacity in a steel package that won't let you down.
This magazine uses heat-treated blued steel for the body, which delivers the durability and corrosion resistance you need whether you're hitting the range or working in field conditions. ProMag designed these with traditional stamping and welding techniques, creating a magazine that can handle rough treatment without falling apart. The blued finish adds an extra layer of protection against the elements.
The real reliability comes from the component choices inside. You get a chrome-silicon wire spring that's precision wound and heat-treated, paired with an injection-molded polymer follower. This combination keeps the feeding smooth and dependable through repeated use. For a caliber like the 6.8 SPC that demands proper feeding, these components work together to keep rounds cycling into the chamber without issue.
ProMag manufactures these magazines domestically and stands behind them with a lifetime guarantee against manufacturer defects. That warranty reflects their commitment to quality, which extends across every step of assembly. This magazine works whether you're running a dedicated 6.8 SPC upper or you've converted an existing AR-15 platform to the cartridge.
Yes, the COLA27 is designed to work with any standard AR-15 or M16 platform that's chambered in 6.8mm Remington SPC. You'll only need to swap magazines when converting a standard AR-15 upper to 6.8 SPC, since the cartridge uses the same magazines as the 5.56 format with the same standardized mag well.
Steel magazines like the COLA27 offer several benefits for the 6.8 SPC cartridge. They're durable under hard use, resistant to deformation, and the thinner profile can fit mag pouches and carriers more efficiently. Steel also feels substantial and doesn't require the careful handling that some polymer mags demand, though both can be equally reliable when built to standards.
For the 6.8 SPC, 27 rounds sits in a sweet spot. It gives you more firepower than standard 20 or 25-round mags without making the magazine so long it becomes unwieldy in prone shooting or tight spaces. If you run the 6.8 for hunting, tactical training, or competition, the extra rounds mean fewer reload breaks at the range.
ProMag's lifetime warranty covers defects in materials and workmanship. If the magazine ever fails due to a manufacturing defect, you can return it and receive a replacement. The warranty is straightforward and doesn't require proof of purchase, making it one of the better guarantees in the aftermarket magazine world.
| UPC | 708279011290 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | COLA27 |
| Brand Fit | AR-15 Platform |
| Caliber/Gauge | 6.8mm Remington SPC |
| Capacity | 27rd |
| Model | |
| Model Fit | AR-15 |
| Product Type | Detachable |
| Shipping Weight | 0.55 |
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