Description

The Glock 20 Gen 5 MOS is a full‑size 10 mm Auto polymer‑framed, striker‑fired pistol combining Glock’s renowned reliability and ruggedness with the Modular Optic System (MOS) for easy red‑dot sight installation. It features the latest Gen 5 enhancements — like an ambidextrous slide stop, reversible magazine catch, rough textured frame, and interchangeable backstraps — plus a robust 15‑round capacity and strong 10 mm performance suitable for defense, hunting, and range use. (GLOCK Perfection)

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Specifications

Caliber & Operation

• Caliber: 10 mm Auto
• Action/System: Striker‑fired, Glock Safe Action® system (three passive safeties)
• Optics: Modular Optic System (MOS) slide — optics‑ready cut with adapter plates for popular red‑dots (adapter plates typically not included)

Capacity

• Magazine Capacity: Standard 15 + 1 rounds (varies by jurisdiction)
• Magazines Included: Often three 15‑round magazines (varies by retailer)

Barrel & Dimensions

• Barrel Length: 4.61 in (117 mm) — Glock Marksman Barrel
• Overall Length: ~8.07 in (205 mm) 
• Slide Length: ~7.52 in (191 mm) 
• Height (with mag): ~5.51 in (140 mm) 
• Width (overall): ~1.38 in (35 mm) 

Weight

• Unloaded: ~26.63 oz (755 g) 
• With Empty Mag: ~29.81 oz (845 g) 
• Loaded (with 15‑rd mag): ~38.80 oz (1100 g) 

Frame & Ergonomics

• Frame: Black polymer with Gen 5 rough textured frame for improved grip
• Backstraps: Interchangeable modular backstraps for customized grip size
• Magazine Catch: Reversible magazine catch for ambidextrous use
• Slide Stop: Ambidextrous slide stop lever
• Accessory Rail: Integrated accessory rail for lights/lasers

Sights & Controls

• Sights: Factory fixed white‑dot sights (front and rear)
• Trigger Pull: ~26 N (~5.8 lb) typical trigger resistance
• Safety Features: Internal Safe Action® safeties; no manual safety

Finish & Materials

• Slide Finish: nDLC (Glock’s durable finish) for corrosion resistance
• Frame Finish: Black polymer with texture

Use Cases

• Defense: High‑power personal and home defense option
• Hunting: Suitable for hunting medium to large game with appropriate loads
• Range: Good for range training and magnum performance shooting

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Note

• The Gen 5 enhancements improve ergonomics and handling over previous generations, and the MOS configuration makes it easier to mount micro‑red‑dot optics for faster target acquisition.
• Despite its magnum 10 mm chambering, ergonomics and recoil are well‑balanced for a full‑size frame, making it versatile for many shooting scenarios.