Glock G20 Gen4 10mm Auto Full-Size Pistol, 4.61 in CHF Polygonal Barrel, 15+1, Austria — Very Good
This Glock G20 Gen4 is a full-size 10mm Auto with matching serial numbers on the barrel, slide, and frame, and clear Austrian/import markings. It features a 4.61-inch cold hammer-forged barrel with polygonal rifling, Gen4 dual captive recoil spring assembly, and the Gen4 grip texture with finger grooves. The slide carries the correct "GLOCK 20 Gen4 AUSTRIA 10mm Auto" legend, and the factory polymer sights are in place. Two OEM 15-round magazines and the Glock factory clamshell case are included.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Polygonal rifling - Clean, well-defined polygonal profile throughout.
Specific Condition Notes: This firearm is in great shape. There are some minor scratches and blemishes present. The bore is clean and shiny.
What’s Included
- Glock factory clamshell hard case
- 2x 15-round Glock-marked 10mm Auto OEM magazines
The G20 Gen4 configuration delivers the Gen4 dual captive recoil spring assembly, the Gen4 grip texture with finger grooves, and a reversible, enlarged magazine release. The frame is polymer with an integrated accessory rail and the Gen4 modular backstrap interface.
Its 4.61-inch steel barrel is cold hammer-forged with polygonal rifling, and the barrel hood shows the AT mark. The slide is non-MOS with rear serrations and carries the correct "GLOCK 20 Gen4 AUSTRIA 10mm Auto" legend.
This pistol uses Glock's striker-fired Safe Action system with an integrated trigger safety tab. Sights are the factory fixed polymer set: a white-dot front and white U-outline rear.
Markings include "MADE IN AUSTRIA GLOCK, INC., SMYRNA, GA." and the left grip patent mark "U.S. Pat. 8,156,677." The two included OEM magazines are Glock-marked 10mm Auto with base mold code "1522-02." The interior foam of the OEM case is deteriorating.




