Shield Arms +5/4 Magazine Extension for Glock 17/22 – Mud Brown

The Shield Arms +5/4 Magazine Extension adds capacity to factory Glock 17 and 22 magazines, providing +5 rounds for 9mm (G17) or +4 rounds for .40 S&W (G22). This extension is engineered for shooters who need extra capacity for competition, duty, or range use without compromising reliability.

Constructed from reinforced polymer with a Mud Brown finish, the extension maintains the factory magazine's footprint while adding length. Installation is straightforward with basic disassembly tools—remove the factory baseplate, replace with the Shield Arms extension, and install the provided spring. The kit includes everything needed for installation: extension body, spring, and retention plate.

• Part Type: Magazine Extension
• Compatible Firearms: Glock 17 (9mm), Glock 22 (.40 S&W)
• Capacity Increase: +5 rounds (9mm), +4 rounds (.40 S&W)
• Material: Reinforced Polymer
• Finish: Mud Brown
• Installation: Drop-In (basic tools required)
• Includes: Extension Body, Spring, Retention Plate