Wosport GB-48 Frame Expander for Glock G17 G18 G19 — TAN

The Wosport GB-48 is a front frame extension for Glock G17, G18 and G19 pistols. It clamps onto the frame's Picatinny rail and reshapes the front section of the pistol by adding two lateral accessory rails, a reinforced grip area, and an internal spare magazine well. It is designed for shooters who want to increase their pistol's modularity without touching any internal components.

The two integrated lateral rails allow accessories to be mounted on both sides simultaneously — lights, lasers or grips — without giving up the original underbarrel rail, which remains fully available. The shaped front grip area provides an immediate tactile reference for the support hand, useful with advanced grip techniques that place the fingers extended along the frame.

The spare magazine housing built into the grip section deserves careful consideration: it keeps a second magazine ready and reduces the load on the belt, but retention is friction-only with no mechanical lock. This makes insertion and extraction fast, though it is less suited to highly dynamic physical use where the pistol may take impacts or be inverted.

Key points

• Attaches to the frame rail with no internal modifications: installation and removal are fully reversible.
• Two additional lateral rails allow accessories to be mounted on both sides while keeping the original rail free.
• The shaped front grip area improves control with advanced grip techniques.
• The internal spare magazine housing reduces belt load and keeps a second magazine on the pistol.
• Compatible with Glock G17, G18 and G19.

In the box

• Wosport GB-48 frame expander, TAN colour