ProMag MOS01 10-Round Magazine 22 LR Mossberg 702 Plinkster Steel

The ProMag MOS01 magazine transforms the Mossberg 702 Plinkster's feeding reliability with precision-engineered construction and consistent 10-round capacity. This aftermarket magazine addresses common feeding issues found in factory magazines while maintaining the rifle's lightweight profile for extended shooting sessions.

What Makes This Different

Unlike polymer alternatives, the MOS01 features blued steel construction that resists deformation under spring pressure and temperature variations. The magazine body maintains dimensional stability across thousands of loading cycles, while the heat-treated spring delivers consistent cartridge presentation. Internal geometry matches SAAMI specifications for 22 LR cartridges, reducing misfeeds and improving extraction timing.

Key Features

• 10-round capacity with drop-free design for rapid reloading
• Blued steel construction resists corrosion and maintains shape
• Heat-treated magazine spring provides 15,000+ cycle lifespan
• Precision-machined follower ensures smooth cartridge feeding
• Compatible with all Mossberg 702 Plinkster rifle variants
• Standard magazine release compatibility - no modifications required
• Removable floorplate allows complete disassembly for cleaning

Range performance shows consistent feeding across various 22 LR ammunition weights from 36 to 40 grains. The magazine functions reliably in competitive shooting scenarios where rapid follow-up shots matter, while the steel construction handles the repeated stress of tactical training drills. Temperature testing confirms operation from -20°F to 140°F without spring tension loss or feeding disruption.

Technical Specs

• Capacity: 10 rounds of 22 LR ammunition
• Material: Blued carbon steel body and floorplate
• Spring: Heat-treated music wire construction
• Follower: High-impact polymer with anti-tilt design
• Overall Length: 4.2 inches
• Weight: 3.1 ounces empty
• Compatibility: Mossberg 702 Plinkster rifles only
• Finish: Traditional hot salt bluing process

The MOS01 magazine delivers the reliability upgrade that serious 702 Plinkster owners demand for training, competition, or recreational shooting. Steel construction and precision manufacturing ensure this magazine will outlast multiple rifle barrels while maintaining feeding consistency that factory magazines struggle to match.