Glock 40

The Glock 40 MOS is Glock's long-slide 10mm pistol and the go-to choice for handgun hunters, backcountry hikers, and anyone who needs serious power with a factory optics cut. A 6.02" barrel, 15+1 rounds of 10mm, and the MOS optics platform make it one of the most capable hunting and field pistols available. Every G40 ships with the MOS optics cut standard.

Read our Glock 40 Buying Guide ↓

Why the G40 Exists

The G40 was built for two specific use cases: handgun hunting and backcountry defense. The 6.02" barrel wrings maximum velocity out of 10mm loads — meaningfully more than the G20's 4.61" barrel — which matters for both hunting performance and barrier penetration in bear defense scenarios. The MOS cut is standard because serious field use almost always benefits from an optic: a red dot or long-eye-relief scope dramatically extends accurate range compared to iron sights on a hunting pistol.

Glock 40 Specs

10mm for Bear Defense

The 10mm Auto is one of the most effective bear defense cartridges available in a semi-automatic pistol. Hard-cast 10mm loads from companies like Buffalo Bore, Underwood, and DoubleTap penetrate deeply enough to reach vital organs even on large bears. The G40's 15-round capacity and fast follow-up shots give it a practical advantage over revolvers in a charge scenario. Pair it with a Leupold DeltaPoint or similar optic for a complete field carry setup.

What to Know Before You Buy

The G40 shares magazines with the G20 (full-size 10mm). 15-round G20 magazines work in the G40.
Full-power 10mm loads produce significant recoil. New 10mm shooters should start with standard-pressure loads before moving to hot bear defense ammunition.
The G40 MOS uses the standard Glock MOS optics footprint — most full-size Glock-compatible red dots will mount directly.
All Glock pistols ship to your local FFL dealer. Standard background check procedures apply.

Questions about the G40 for hunting or backcountry carry? Call us at 800-917-7137 or use our live chat.