ProMag MOSA3 32-Round Magazine 9mm Mossberg MC2 Blued Steel

The ProMag MOSA3 extends your Mossberg MC2's capacity to 32 rounds of 9mm ammunition, providing triple the standard magazine capacity for extended range sessions and competitive shooting. This blued steel magazine delivers reliable feeding and consistent performance when high round counts matter most.

What Makes This Different

Unlike standard 10-round factory magazines, the MOSA3 utilizes a robust steel construction with enhanced spring tension designed specifically for the MC2's feeding geometry. The extended body maintains proper balance while the reinforced feed lips resist deformation under repeated loading cycles. ProMag's engineering ensures consistent cartridge presentation even when fully loaded to capacity.

Key Features

• 32-round capacity triples standard magazine ammunition supply
• Blued carbon steel construction resists corrosion and wear
• Heat-treated spring maintains tension through thousands of cycles
• Precision-formed feed lips ensure reliable cartridge presentation
• Drop-free design allows rapid magazine changes
• Compatible with all Mossberg MC2 pistol variants
• Removable floor plate simplifies cleaning and maintenance

Range testing demonstrates consistent feeding across various 9mm loads from 115-grain FMJ to 147-grain JHP ammunition. The extended length provides a secure grip for tactical reloads while the steel construction withstands repeated drops on concrete surfaces. Competition shooters benefit from reduced reload frequency during high-volume courses of fire, while the magazine's profile maintains compatibility with standard MC2 holsters.

Technical Specs

• Caliber: 9mm Luger/9x19 Parabellum
• Capacity: 32 rounds
• Construction: Blued carbon steel body
• Spring: Heat-treated chrome silicon wire
• Follower: High-impact polymer
• Overall Length: Approximately 7.8 inches
• Weight: 8.2 ounces empty
• Compatibility: Mossberg MC2 series pistols
• Manufacturer: ProMag Industries

The MOSA3 addresses the MC2's limited factory capacity without compromising reliability or requiring modifications to your pistol. ProMag's established reputation for aftermarket magazines ensures this investment delivers consistent performance when standard capacity falls short.