The ProMag COLA37 transforms the classic 1911 platform into a high-capacity powerhouse, delivering 18 rounds of 9mm firepower in a single magazine. This extended magazine addresses the traditional capacity limitations of the 1911 design while maintaining the pistol's legendary reliability and handling characteristics.
What Makes This Different
Unlike standard 7-8 round 1911 magazines, the COLA37 more than doubles capacity without requiring frame modifications or proprietary parts. The blued steel construction matches factory finishes on most 1911 pistols, providing a cohesive appearance. The extended baseplate includes witness holes for quick round counts and features a removable floor plate for easy maintenance.Key Features
- 18-round capacity increases firepower by 125% over standard magazines
- Heat-treated blued steel body resists corrosion and wear
- Chrome silicon spring maintains consistent tension through thousands of cycles
- Anti-tilt follower prevents jams and ensures reliable feeding
- Fits all 9mm Colt 1911 and compatible frames without modification
- Witness holes allow visual confirmation of remaining ammunition
- Removable baseplate simplifies cleaning and spring replacement
Technical Specs
- Capacity: 18 rounds of 9mm Luger
- Material: Heat-treated carbon steel with blued finish
- Overall Length: Approximately 6.5 inches
- Width: 0.9 inches at body, 1.1 inches at baseplate
- Spring: Chrome silicon wire for extended life
- Follower: Anti-tilt polymer construction
- Compatibility: Colt 1911 and clones chambered in 9mm
- Country of Origin: United States
