Description
Rebuilt Glock 40 Gen 4 10mm Optics Ready MOS 15 Round
Rebuilt Glock 40 Gen 4 10mm Optics Ready MOS 15 Round
A Rebuilt Glock 40 Gen 4 MOS (Model UR40501MOS) is a factory Glock-rebuilt version of the long-slide Glock 40 Gen 4 chambered in 10mm Auto. “Rebuilt” generally indicates that Glock inspected and restored the pistol to factory specifications before resale. Depending on the distributor and the pistol’s history, these may be factory reconditioned firearms or pistols rebuilt after failing initial inspection or being returned. They are distinct from a typical used handgun sold “as-is.”
Specifications
| Feature | Details |
|---|---|
| Manufacturer | Glock |
| Model | Glock 40 Gen 4 MOS |
| Model Number | UR40501MOS |
| Caliber | 10mm Auto |
| Action | Safe Action (striker-fired) |
| Capacity | 15+1 rounds |
| Barrel Length | 6.02 in (153 mm) |
| Overall Length | 9.49 in (241 mm) |
| Slide Length | 9.02 in (229 mm) |
| Height | 5.47 in (139 mm) |
| Width | 1.34 in (34 mm) |
| Unloaded Weight | About 32.3 oz (915 g) |
| Weight with Empty Magazine | About 35.5 oz (1005 g) |
| Loaded Weight | About 44.6 oz (1265 g) |
| Trigger Pull | Approximately 5.4 lb (24 N) |
These specifications are the same as a standard Glock 40 Gen 4 MOS.
MOS (Modular Optic System)
The Glock 40 Gen 4 is only produced in MOS configuration, meaning the slide is factory machined to accept miniature red-dot optics using interchangeable adapter plates.
Features include:
- Factory optics-ready slide
- Removable cover plate
- Compatibility with multiple red-dot footprints using MOS adapter plates
- Optic not included with the pistol
The Glock 40 uses the MOS Adapter Set 02, which is specific to the wider 10mm/.45-caliber MOS slide.
Standard Features
- Long-slide design for increased sight radius
- Polymer frame with interchangeable Gen 4 backstraps
- Dual captive recoil spring assembly
- Glock Safe Action trigger system
- Three passive safeties:
- Trigger safety
- Firing pin safety
- Drop safety
- Glock accessory rail
- Polygonal-rifled barrel
Magazine Compatibility
The pistol uses factory 15-round Glock 20/Glock 40 magazines and is compatible with magazines designed for the Glock 20 family.
Typical Package
A rebuilt Glock 40 MOS commonly includes:
- Glock 40 Gen 4 MOS pistol
- Three factory 15-round magazines (varies by seller)
- Glock hard case
- Cleaning brush
- Magazine loader
- Cable lock
- Owner’s manual
Some rebuilt pistols may not include the original MOS adapter plates, so it’s worth confirming the package contents before purchasing.
“Rebuilt” Condition
Factory rebuilt models are generally describe as:
- Mechanically restored to factory specifications
- Fully function-tested
- May show minor cosmetic handling marks
- Often look nearly new
- Less expensive than a brand-new Glock
Retailers and buyers frequently distinguish these from ordinary use pistols because the rebuild work is performed by or to Glock factory standards.
Advantages
- Factory optics-ready slide
- Powerful 10mm Auto chambering
- Long 6-inch barrel for higher velocity and improved accuracy
- Excellent platform for hunting, target shooting, and outdoor/woods carry
- High magazine capacity for its caliber
- Proven Glock reliability
Considerations
- Large overall size makes concealed carry impractical for most users.
- Recoil is greater than that of comparable 9mm pistols.
- Verify whether MOS adapter plates are included if you intend to mount an optic.
- Some rebuilt examples may have minor cosmetic blemishes despite being mechanically sound.
Common Uses
The Glock 40 Gen 4 MOS is popular for:
- Hunting (where legal)
- Backcountry or wilderness carry
- Target shooting
- Metallic silhouette competition
- Home defense
- Recreational shooting
Factory rebuilt models are often chose by buyers seeking the performance of the Glock 40 MOS at a lower price point.
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