Out of stock
Promag Cola37 18Rd 9Mm Fits Colt 1911 Blued Steel
$26.23
The Promag Cola37 is an 18-round 9mm magazine designed specifically for Colt 1911 pistols. If you run a 1911 in 9mm and want to maximize your round count without changing platforms, this blued steel magazine gives you nearly double the capacity of a standard single-stack 1911 mag. It's a practical choice for shooters who value the ergonomics and controls of the 1911 platform but appreciate the benefits of higher-capacity 9mm ammunition.
Promag magazines are a familiar option in the aftermarket space—they're built to mil-spec tolerances and designed to work reliably in the firearms they're matched to. The blued steel finish matches the appearance of most traditional 1911s and resists corrosion in the field. At 18 rounds, this magazine is significantly longer than factory 1911 mags, which will extend below the grip; if you carry or store your pistol, account for that extra length when choosing holsters or cases.
Whether you're setting up a 9mm 1911 for range sessions, competitive shooting, or home defense, having extra magazines on hand is part of responsible ownership. This Promag gives you capacity options without forcing a switch to a double-stack platform.
Key Features
- 18-round capacity in 9mm for Colt 1911 pistols
- Blued steel construction for durability and corrosion resistance
- Purpose-built to fit 1911 platform firearms
- Mil-spec design for reliable feeding and function
Specifications
| Brand | Promag |
| Model | Cola37 |
| Caliber | 9mm |
| Capacity | 18 rounds |
| Firearm Fit | Colt 1911 |
| Material | Blued steel |
Frequently Asked Questions
Will this magazine work in my Colt 1911 in 9mm?
Yes—this Promag Cola37 is engineered to fit Colt 1911 pistols chambered in 9mm. Before first use, function-test it in your specific firearm to confirm reliable feeding and ejection.
How much longer is an 18-round magazine compared to a standard 1911 mag?
The exact dimensional difference isn't specified here, but a magazine with significantly more capacity will extend noticeably below the grip. Measure or test-fit it with your holster or storage setup before relying on it for carry.
Is this magazine new or used?
That information isn't provided in the product details. Contact Bosque Outdoors directly to confirm the condition of the specific unit you're interested in.
What's the warranty on Promag magazines?
Warranty information is not included in the product details. Reach out to our team for details on any coverage or guarantees that may apply.
