Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols

Maximize your firepower potential with the Shield Arms +5/+4 Magazine Extension for Glock 19 / 23 Pistols. Compatible with most factory and aftermarket G19/G23 magazines, this easy-to-install extension ensures flawless feeding performance in any shooting application. Lightweight aluminum construction delivers exceptional strength and natural shock resistance, while the wear-resistant anodized finish protects against scratches, rust, and other cosmetic and mechanical hazards. Adds five rounds to 9mm Glock 19 magazines; adds four rounds to .40 S&W Glock 23 magazines.