Glock G20 Gen4 10mm Full-Size, 4.61 in Barrel, 15+1, Aftermarket Fiber-Optic Sights
This Glock G20 Gen4 is a full-size 10mm pistol outfitted with an installed green fiber-optic sight set and presented in excellent condition. It retains the standard 4.61-inch barrel, Glock accessory rail, and Gen4 ergonomics with the enlarged, reversible magazine release. Made in Austria with AT proof and importer marks, this example has matching serial numbers on the slide and frame and includes one factory 15-round magazine.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minor, superficial scratches and blemishes are present from light handling.
What's Included
- Aftermarket fiber-optic sight set (green front, two-rod green rear), installed
- One Glock factory 15-round polymer magazine (GLOCK-marked, AUSTRIA floorplate)
The G20 Gen4 pairs Glock's striker-fired Safe Action system with the 10mm cartridge in a full-size format. It features a steel 4.61-inch barrel and a 15+1 capacity, offering the standard Gen4 RTF grip texture with finger grooves for secure handling. The enlarged, reversible magazine release is a Gen4 update designed to accommodate different hand preferences.
This pistol is equipped with aftermarket green fiber-optic sights: a high-visibility front and a two-rod green rear, both installed. The sight picture is bright in daylight conditions and provides a clear, simple reference.
The frame is polymer with the Gen4 modular backstrap interface; no backstrap is currently installed. A Glock accessory rail is integrated for mounting compatible lights or accessories as desired.
Manufactured in Austria, it bears the "AT" proof on the barrel hood and the "MADE IN AUSTRIA GLOCK, INC., SMYRNA, GA." import mark. This example has matching serial numbers on the slide and frame. The slide is the non-MOS configuration with no optic cut, and there are no compensator ports.



