G40 Gen4 MOS (10 mm)

Built around an extended long-slide profile, this full-size platform is targeted squarely at backcountry hunters, guides, and anglers operating in heavy predator country. Packing a full six-inch barrel chambered in 10mm Auto, it extracts maximum velocity and kinetic energy from deep-penetrating, hard-cast defensive ammunition. The optics-ready Modular Optic System (MOS) slide pairs with an extended sight radius, giving shooters the ability to place fast, decisive shots at distances where compact defense pistols stumble.

Construction adheres to Glock's proven Gen4 architecture, utilizing a steel-reinforced polymer frame paired with a treated, corrosion-resistant steel slide. The dual recoil spring assembly does honest work here, dampening the sharp impulse of full-power 10mm rounds and tracking predictably back on target. The added mass out front keeps the muzzle remarkably flat compared to shorter service pistols, allowing for controllable follow-up shots under pressure, while the standard factory trigger provides a reliable, functional break suited to rugged field conditions.

Measuring over nine inches in overall length, this firearm demands a dedicated chest rig or sturdy drop-leg holster; belt carry quickly becomes fatiguing during long trail days. In exchange for the bulk, you gain a standard fifteen-round capacity that dramatically outpaces traditional big-bore backcountry revolvers in both payload and reload speed. For high-threat wilderness environments where terminal ballistics matter far more than concealment, it remains one of the most capable and dependable production sidearms available.