The GX4XL is built on the same award-winning polymer receiver as the GX4. Hailed for its exceptional handling characteristics in a micro-compact profile, the GX4XL's hybrid stainless steel and polymer receiver include s a modular grip with standard or high-swell backstrap options for a custom fit, industry-leading grip texturing for optimal firearm control, an ergonomic and reversible magazine release to promote no-fumble mag swaps, and a class-leading flat-face target trigger with a generous trigger guard to accommodate all hand sizes.