Glock 43X MOS Slimline 9mm Luger Pistol | 3.41" Marksman Barrel | 15+1 | RMSc Red Dot Ready
The Glock 43X MOS blends the slim, easily concealed 43X frame with a factory-milled slide that accepts Shield RMSc-pattern optics. This later-production Austrian pistol features Glock’s Marksman Barrel, Gen5-style stippling, and a reversible magazine catch, all in a micro-sized package that still offers a 15-round aftermarket magazine capacity. With matching serial numbers on the slide, barrel, and frame plus front and rear serrations, it delivers an up-to-date Slimline configuration ready for red-dot carry.
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 – Sharp lands and grooves (polygonal rifling).
Specific Condition Notes: Light handling marks are present. Functionality of the included red dot sight could not be confirmed.
What’s Included
- Glock factory hard plastic pistol case
- Micro red dot sight marked RMSc
- MOS optic mounting plate (RMSc footprint) installed
- 2× 15-round aftermarket steel Slimline magazines stamped “MADE IN THE USA”
This 43X MOS slide is precision-milled at the factory for direct mounting of Shield RMSc-pattern optics, allowing true co-witness with the factory polymer sights. The included RMSc-style red dot sits low enough to use the white-dot front and U-notch rear without tall suppressor sights.
The 3.41-inch Glock Marksman Barrel uses polygonal rifling and a target crown, paired with a 1:9.84 right-hand twist for reliable accuracy from defensive to match-grade 9mm loads. The bore remains in excellent, mirror-bright condition.
A Gen5-style stippled grip, integral beavertail, and reversible magazine catch enhance control while retaining the ultra-slim Slimline profile. The slim accessory rail molded into the dust cover accepts compatible lights or lasers without adding bulk.
Finished in durable black nDLC, the slide carries forward and rear serrations for confident manipulation. Matching serial numbers (prefix BPBL) and Glock Inc. Smyrna, GA import marks confirm post-2019 production and authentic factory origin.