Shield Arms Glock 19/23 Magazine Extension +5/+4, Black

The Shield Arms Glock 19/23 Magazine Extension is a machined aluminum base plate designed to increase usable capacity for compatible Glock magazines while allowing straightforward service and cleaning. It provides a +5 round increase for Glock 19 magazines and a +4 round increase for Glock 23 magazines. The extension features an easy-access floor plate that lets you access the spring and follower without removing the extension from the magazine body. Finished in black Type II anodize, it ships with an upgraded +10% power spring and is backed by Shield Arms’ lifetime warranty and Spring for Life guarantee.

Key Specifications

• The extension adds 5 rounds to a Glock 19 magazine.
• The extension adds 4 rounds to a Glock 23 magazine.
• Machined from 6061 aluminum for structural strength.
• Finished with a Type II black anodize for corrosion resistance.
• Includes a +10% power spring to support additional capacity.
• Features a serviceable easy-access floor plate for spring and follower maintenance.
• Designed to fit OEM Glock 13- and 15-round magazines only (per manufacturer notes).
• Color and finish listed as black.
• Backed by a lifetime warranty and Shield Arms’ Spring for Life guarantee.

Robust and practical in design, this extension is suited to shooters who want a reliable, serviceable capacity increase without altering the magazine body. Its machined construction and anodized finish provide durable, everyday function for carry or duty configurations while simplifying magazine maintenance.

Related Videos: