Glock G17L Gen5 MOS 9mm Long-Slide, 6.02 in GMB Barrel, nDLC Finish, 17+1, 4 Mags, Streamlight TLR-8 A
The Glock G17L Gen5 MOS is a long-slide 9mm built around a 6.02 in Glock Marksman Barrel and an nDLC-finished slide with front and rear serrations. This example adds the MOS optics interface with the cover plate installed, ambidextrous controls, and a flared magwell. It comes with four 17-round magazines and a Streamlight TLR-8 A light/laser combo, making it a complete, feature-rich package with matching serial numbers on the slide, barrel, and frame.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minimal markings from prior handling and use. Please refer to the pictures for close-ups.
What's Included
- Glock G17L Gen5 MOS 9mm pistol
- 4 Glock factory 17-round magazines
- Glock polymer magazine loader
- Streamlight TLR-8 A red laser/white light combo
The 6.02 in long-slide configuration delivers an extended sight radius and uses the Gen5 Glock Marksman Barrel for enhanced mechanical precision. The slide wears Glock's nDLC black finish and features both front and rear serrations for confident manipulation.
The MOS optics interface is present with the cover plate installed, providing a factory-cut mounting system while preserving a clean profile as configured. Standard sights include a white-dot front and Glock adjustable polymer rear with a white outline.
The Gen5 frame brings an ambidextrous slide stop lever, a reversible large magazine release, a flared magwell profile, and the Modular Backstrap System. Glock's Safe Action system and an approximate 5.4 lb (24 N) trigger maintain the familiar Gen5 operating feel.
Capacity is 17+1 in 9mm Luger, and this pistol includes four factory double-stack magazines. It shows matching serial numbers on the slide, barrel, and frame, with import markings reading "MADE IN AUSTRIA / GLOCK, INC., SMYRNA, GA."
This model was reintroduced in May 2024 and was listed as discontinued in 2025, adding notable context to its production timeline while retaining the core Gen5 MOS feature set and long-slide configuration.