Glock G45 Gen5 MOS 9mm Luger, 4.02 in GMB Barrel, nDLC, Ambi Controls, Sightmark Mini Shot M-Spec Installed, 2x 17-Round Mags
This Glock G45 Gen5 MOS pairs the crossover frame/slide format with a factory optics-cut slide and an installed Sightmark Mini Shot M-Spec red dot. It features the Glock Marksman Barrel, nDLC-treated steel components, and Gen5 upgrades including ambidextrous slide stop levers and a flared magwell. Austrian proof-style markings and matching serials on the frame and barrel add to its appeal. Overall condition is very good with an excellent, mirror-bright bore.
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.
Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present. The bore presents a bright, clean appearance. See the photos for additional detail.
What's Included
- Glock factory hard case
- 2x 17-round Glock factory 9mm double-stack magazines
- Sightmark Mini Shot M-Spec red dot sight (installed)
- Glock MOS Adapter-Set 01 nDLC with plates and hardware
- Glock beavertail backstrap (Modular Backstrap System), not installed
- Glock Instructions for Use manual
The G45 uses Glock’s crossover design: a compact-length slide over a full-size frame. This layout delivers a 4.02 in Glock Marksman Barrel for accuracy and a full-size grip that accepts 17-round magazines, yielding a standard 17+1 capacity.
As a Gen5 MOS model, it features a factory optics cut with Glock’s adapter-plate system, front and rear slide serrations, a durable black nDLC finish on steel components, ambidextrous slide stop levers, a reversible magazine release, a flared magwell, and an accessory rail on the dustcover.
The barrel is steel with Glock’s enhanced rifling (GMB), contributing to the strong bore condition reported. Fixed iron sights are present, with a high-visibility red/orange front insert for a clear index when using irons alongside the installed red dot.
Markings include Austrian proof-style stamps on the barrel hood and the molded grip legend reading MADE IN AUSTRIA • GLOCK, INC., SMYRNA, GA. The frame and barrel carry matching serials, consistent with factory assembly.

