The Glock 43X MOS 9mm Pistol with a threaded barrel (brand part no. UX4350203FRMOSTB) combines the 43X’s compact-length grip with a subcompact-slim slide, giving a broad range of hand sizes a comfortable, easily concealed platform. Glock builds the 43X MOS around a polymer frame with an integrated accessory rail and beavertail, a precision-machined slide with an advanced surface treatment for corrosion resistance and reduced wear, and three independent, automatically re-engaging safeties. The Modular Optic System slide accepts popular miniature red dot sights via separately sold adapter plates, and the 3.41-inch barrel is threaded for a suppressor or muzzle device. The pistol ships complete with two magazines, a magazine loader, a cleaning kit, a pistol case, and a gun lock. Among our semi-auto handguns, the 43X MOS suits concealed carriers who want a slim, optics-capable 9mm with genuine capacity.

Key Specifications

• The chambering is 9mm Luger.
• The magazine capacity is 15 rounds, for 15+1 total.
• The barrel is 3.41 inches long and threaded.
• The slide is optic-ready (MOS) and serrated, steel construction.
• The frame is polymer with an integrated accessory rail and beavertail.
• The safety system includes three independent, automatic safeties.
• The extractor doubles as a loaded-chamber indicator.
• The package includes two magazines, a mag loader, a cleaning kit, a case, and a gun lock.

Frequently Asked Questions

Does this pistol come with optic adapter plates? No, the MOS slide is optic-ready, but mounting plates for a specific red dot are sold separately.

Does the barrel accept a suppressor? Yes, the 3.41-inch barrel is threaded for a suppressor or muzzle device.

What’s included in the box? Two magazines, a magazine loader, a cleaning kit, a pistol case, and a gun lock.

Buy the Glock 43X MOS 9mm Pistol

A slim, optics-capable 9mm with a threaded barrel and genuine 15-round capacity, the 43X MOS gives concealed carriers real flexibility in one compact package. Order it from our Lubbock, Texas gun shop for shipping to your FFL as soon as it’s available.