Glock G34 Gen4 MOS 9mm Long-Slide, SilencerCo Threaded Barrel, USA-Marked, 5.9 in Barrel, 17+1
This Glock G34 Gen4 MOS stands out as a long-slide 9mm with a factory MOS optic-cut slide and the characteristic top lightening window. It features a SilencerCo 9mm threaded barrel with a thread protector installed, comes U.S.-marked from Glock, Inc. in Smyrna, GA, and includes the MOS adapter plates and hardware. It is in excellent condition and ships with two 17-round magazines and the original Glock case and accessories.
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 - Strong, well-defined polygonal rifling.
Specific Condition Notes: Minor, superficial scratches and blemishes are present on the exterior surfaces.
What’s Included
- Glock factory hard case
- Glock Instructions for Use manual
- Cleaning tools
- 2x 17-round Glock OEM 9mm double-stack magazines
- Glock Gen4 interchangeable backstraps
- Glock MOS Adapter-Set 01 optic mounting plates and hardware
- SilencerCo thread protector
The G34 Gen4 MOS slide features the factory MOS optic cut with the cover plate installed and the long-slide top lightening window. The 5.9-inch barrel and extended sight radius pair with Glock’s adjustable polymer rear sight and a white-dot front for a clear, straightforward sight picture.
This pistol is customized with a SilencerCo 9mm threaded barrel, and a matching thread protector is included. The barrel complements the platform’s short-recoil, locked-breech operating system while maintaining the Glock reliability buyers expect.
The Gen4 frame uses a black polymer construction with RTF texturing and finger grooves for a secure hold, plus interchangeable backstraps to tailor grip size. A Glock accessory rail on the dust cover supports common weapon-mounted lights or other rail-compatible accessories.
Chambered in 9mm Luger with a 17+1 capacity, this striker-fired G34 includes two 17-round OEM magazines. It is a U.S.-marked example with "MADE IN USA – GLOCK, INC., SMYRNA, GA" on the frame, and the serial number is present on both the frame insert and barrel.




