GLOCK 20 Gen5 MOS | 10mm Auto | UA205S201MOS

The GLOCK 20 Gen5 MOS is a full-size, optics-ready 10mm Auto pistol designed around Gen5 ergonomics and Glock’s Modular Optic System. It ships with three 10‑round magazines, a polymer frame with changeable backstraps, serrated slide surfaces and fixed factory sights. The MOS cut accommodates popular miniature red-dot optics; for a matched optic under $1,000 consider a compact red dot such as a Trijicon RMR Type 2 or a Holosun model with a compatible adapter plate.

Recommended uses: backcountry big-game hunting where a hard-hitting 10mm is appropriate, and range-based precision and defensive marksmanship practice.

Product Specifications

• The UPC is 764503059865.
• The manufacturer part number is UA205S201MOS.
• The cartridge is 10mm Auto.
• The action is Semi-Auto.
• The firearm is Optics Ready with Glock’s MOS adapter plate system.
• The package includes 3 x 10-round magazines.
• The frame material is polymer with changeable backstraps for fit adjustment.
• The finish and frame color are listed as black.
• The slide is described as serrated for improved manipulation.
• The sights are fixed factory Glock sights.
• The muzzle is non-threaded.
• The safety system is described as Firing Pin/Trigger Block.
• The product ships in a plastic case and includes basic accessories.
• The country of origin is listed as AT (Austria).

Durable, optics-ready and built to Glock’s Gen5 ergonomic standard, this G20 MOS balances a robust 10mm chambering with modern sighting options. The MOS configuration keeps installation of a miniature red dot straightforward while the polymer chassis and backstrap system let shooters tailor grip feel. For those who need a full-size 10mm platform that accepts optics and arrives with multiple magazines, this model is a practical choice.

Owners commonly praise the pistol’s reliability in service and the improved accuracy feel from the Glock Marksman Barrel.

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