ProMag Glock 43x/48 9mm 28rd Extended Magazine, Blued Steel Overview: The ProMag Glock 43X/48 28-round magazine is a high-capacity aftermarket magazine designed for slimline Glock pistols. It significantly increases ammunition capacity over factory magazines while maintaining compatibility with G43X and G48 platforms. Key Features: 28-round capacity: High-capacity extension for slimline Glock pistols. Glock 43X / 48 compatibility: Designed specifically for slimline 9mm Glock models. Heat-treated steel construction: Durable steel body for long-term strength and reliability. Corrosion-resistant finish: Protective coating helps resist wear and environmental exposure. Chrome silicon spring: Heat-treated spring ensures consistent feeding performance. Polymer follower: Promotes smooth cartridge alignment and cycling reliability. Polymer magazine catch insert: Allows use with standard Glock mag catch without modification. Removable baseplate: Enables easier cleaning and maintenance. Lifetime warranty: Backed by ProMag replacement guarantee. Specifications: Manufacturer: ProMag Category: Pistol Magazine Caliber: 9mm Luger Capacity: 28 Rounds Material: Heat-Treated Steel Finish: Black Oxide (Blued-style appearance) Follower Type: Polymer Spring Material: Chrome Silicon Wire Platform: Glock 43X / Glock 48 Applications: Range shooting: Extended capacity for longer training sessions Training use: Reduced reload frequency during drills Recreational shooting: High-capacity slimline Glock option Backup magazine: Spare extended magazine for compatible pistols Additional Features: Heavy-duty build: Steel construction for enhanced durability Smooth feeding system: Optimized spring and follower geometry Easy maintenance: Removable baseplate design Drop-in compatibility: No firearm modification required SKU: GLK-A23UPC: 708279016394