Shield Arms® S15 Gen3 Magazine for Glock 43X/48 – 25-Round / 9×19 mm

The S15 Gen3 magazine by Shield Arms is designed for Glock 43X and Glock 48 pistols chambered in 9×19 mm. Featuring a durable steel construction and optimized internal geometry, it increases magazine capacity to 25 rounds while maintaining reliable feeding and compact platform compatibility. The Gen3 version introduces reinforced construction and enhanced durability for demanding range and training use.

Extended 25-Round Capacity

The S15 magazine significantly increases ammunition capacity compared to the factory Glock magazine while preserving compatibility with the slim-profile Glock 43X and Glock 48 frame. This configuration includes a +10 round extension, increasing total capacity to 25 rounds for extended shooting sessions and reduced reload frequency during training or dynamic shooting drills.

Durable Steel Construction

Unlike factory polymer-lined magazines, the S15 uses an all-steel body that allows more efficient internal geometry and increased cartridge capacity. The Gen3 generation features reinforced construction and enlarged rear stabilizing ribs to minimize magazine movement inside the pistol frame.

The QPQ surface treatment improves abrasion resistance, corrosion resistance, and long-term operational durability.

Optimized for Training and Range Use

The extended base plate increases overall capacity while also providing improved handling and more secure magazine manipulation during reloads. Due to its extended dimensions, this configuration is especially suited for range training, competition, and dynamic shooting applications.

Compatibility Information

The magazine is compatible with Glock 43X and Glock 48 pistols chambered in 9×19 mm. For reliable long-term operation, Shield Arms recommends using a compatible steel magazine catch. Use of the factory polymer magazine catch may result in accelerated wear and reduced reliability.

Key Features

• 25-round capacity in 9×19 mm
• compatible with Glock 43X and Glock 48 pistols
• durable all-steel magazine body
• higher capacity than factory Glock magazines
• included +10 round extension
• reinforced Gen3 construction
• enlarged rear ribs for improved stability
• QPQ finish for enhanced wear and corrosion resistance
• optimized for range training and dynamic shooting
• requires Shield Arms steel magazine catch
• made in the USA