The Shield Arms S15 +5 Pre-Installed Mag Extension Red combines the proven S15 Gen 3 15-round steel magazine with a precision-machined aluminum +5 extension to deliver a compact, high-capacity solution for Glock 43X and 48 pistols. Professionally assembled and function tested by Shield Arms, this magazine arrives ready to run with a 20-round 9mm capacity and a sleek red anodized base that complements modern carry and range builds.

This pre-installed configuration removes the need for tools or guesswork, making it ideal for shooters who want more rounds without extra bulk or installation time. Whether you are focused on efficient range sessions, structured training, or competition use, the S15 +5 Pre-Installed Mag Extension offers a reliable, ready-to-use upgrade backed by Shield Arms’ reputation for thoughtful engineering and dependable performance.

Key Features:

• Manufacturer: Shield Arms
• Model: S15 +5 Pre-Installed Magazine Extension
• Caliber: 9mm Luger
• Magazine Fit: Glock 43X / 48
• Capacity: 20 rounds (15-round S15 Gen 3 magazine with +5 extension)
• Material: Steel magazine with aluminum extension
• Finish Color: Red
• Includes: (1) S15 Gen 3 15-round magazine with pre-installed +5 extension