Glock G20 Gen4 10mm Auto, Full-Size, Factory Gray Frame, 4.61 in Barrel, 3x 15-Round Mags
This Austrian-made Glock G20 Gen4 stands out with its factory gray polymer frame, a distributor-exclusive color variant, and matching serial numbers on the slide, barrel, and frame. Chambered in 10mm Auto with a 15+1 capacity, it comes complete with three factory 15-round magazines and its original Glock case. It features fixed sights, the Safe Action system, and a non-MOS configuration.
The Gen4 frame brings an enlarged, reversible magazine release and the Gen4 texture with finger grooves for confident handling. A steel 4.61-inch barrel with polygonal rifling and a 1:9.84 in twist complements the platform, while rear slide serrations and the Glock universal accessory rail round out its practical features. Factory markings confirm Austrian origin, including AUSTRIA on the slide and an AT marking on the barrel hood.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Strong polygonal rifling throughout.
Specific Condition Notes: This pistol shows minimal marks from previous handling and use. Please review the photos for complete details.
What’s Included
- Glock factory hard case with matching serialized label
- 3 Glock factory 15-round 10mm Auto polymer magazines (GLOCK-marked baseplates)
- Glock magazine loader (5173)
- Owner's manual
The G20 Gen4 delivers full-size capacity and control in 10mm Auto with a 15+1 loadout, fixed sights (white-dot front, white-outline rear), and a 6.77-inch sight radius for clear sight alignment. Its non-MOS configuration keeps the classic factory setup intact.
Gen4 updates include an enlarged, reversible magazine release and the Gen4 texture with finger grooves. The Safe Action system provides three passive safeties: trigger safety, firing pin safety, and drop safety.
The 4.61-inch steel barrel uses polygonal rifling with a 1:9.84 in twist, paired with a slide featuring rear serrations for assured manipulation. The Glock universal accessory rail supports common duty accessories, and the factory gray frame is a distributor-exclusive color variant.
Proof and origin markings include MADE IN AUSTRIA GLOCK, INC., SMYRNA, GA, an AT marking on the barrel hood, and AUSTRIA on the slide. Matching serial numbers are present on the slide, barrel, and frame.




