Glock 31 Gen4

By - Last updated: Wednesday, April 6, 2011 - Leave a Comment

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Summary: The description, specs, MSRP and photos of the Glock 31 Gen4 pistol.

Manufacturer’s Description

The Glock 31 Gen4 is, like its close relative the Glock 31 Gen3, a semiauto built on a full-size polymer frame and chambered in ..357 SIG. Standard features include three-dot fixed sights and a trigger safety.

In addition, the Gen4 offers several new features, including a multiple backstrap frame with a reduced short-frame trigger mechanism housing. The multiple backstrap system allows the user to change the circumference of the grip to fit their individual hand size.

The grip has three options: a short frame, a medium frame or a large frame. The backstraps are easily changed and secured with a single pin. Note: The Gen4’s grip angle is not changed by backstrap modifications to ensure a shooter doesn’t shoot high or low when modifying the backstrap or when shooting a different Glock pistol.

The 31 Gen4 also sports a Rough Textured Frame (RTF) surface designed to enhance grip traction, and its magazine release catch is now reversible and enlarged. This allows users to switch the catch to the left or right side of the pistol with no additional parts.

Finally, the original recoil spring has been replaced with a dual recoil spring assembly designed to reduce recoil while simultaneously increasing the assembly’s life cycle.

Reviews: Here are links to in-depth reviews of the Glock 17 Gen4, the Glock 22 Gen4 and the Glock 37/38/39 Gen3s.

The Specs

Caliber Capacity OAL BBL Width Height Weight
.357 SIG 15+1, 17+1 7.32″ 4.49″ 1.18″ 5.43″ 23.28 oz., unloaded

MSRP: $649

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