RWB Glock 40SW 31-Round Magazine - Steel Lined Black Polymer

The RWB Glock 40SW 31-round magazine delivers serious capacity for shooters who want more rounds downrange without changing mags. Built with a steel-lined black polymer construction, this magazine pairs durability with reliable feeding for your Glock 22 and other compatible .40 S&W platforms. Whether you're running competition stages, training hard at the range, or building a backup mag collection, the extra rounds give you flexibility without sacrificing reliability.

RWB magazines are engineered for straightforward performance—no gimmicks, no fancy coatings, just a solid design that feeds when it matters. The steel-lined construction reinforces the mag body where it takes the hardest hits, while the polymer frame keeps weight down. The 31-round capacity is substantial enough to make mag changes less frequent during longer range sessions, yet the magazine still feeds consistently through the action.

This is a practical choice for shooters who run Glock platform .40 S&W guns and want to maximize their ammo capacity. It's the kind of magazine that lives in a range bag, a competition belt, or a duty rotation—designed to work, not to impress.

Key Features

• 31-round capacity for extended shooting between reloads
• Steel-lined construction for durability and reinforcement
• Black polymer body resists wear and damage
• Compatible with Glock 22 and compatible .40 S&W platforms
• Reliable feeding and proven design

Specifications

Frequently Asked Questions

Will this magazine work with my Glock 22?

Yes, the RWB 31-round magazine is designed to fit and function in the Glock 22, which chambers .40 S&W ammunition.

What makes the steel-lined polymer design different?

The steel lining reinforces the magazine body at high-stress points, extending durability and maintaining reliable feeding over extended use, while the polymer construction keeps the overall weight manageable.

Is this magazine suitable for competition or training?

The 31-round capacity makes it well-suited for range training and competition shooting where higher round counts reduce the frequency of magazine changes during a stage or drill.