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G40Gen4 in MOS Configuration

GLOCK 40 Gen4 in MOS Configuration

The G40 Gen4 in MOS Configuration is chambered in 10 mm Auto and combines a long slide and barrel for improved velocity with a high magazine capacity. The Modular Back Strap design and the reversible magazine catch let you instantly customize its grip to adapt to accommodate any hand size. The MOS Configuration makes an easy job of mounting a reflex sight on the pistol’s slide without the need for a new slide or separate mounting system.

Caliber graphic
  • Caliber 10 mm Auto
3 safeties system graphic
  • System Safe action
Magazine capacity graphic
  • Mag. Capacity Standard: 15
Barrel length graphic
  • Barrel Length 153 mm | 6.02 inch
Weight without magazine graphic
  • Weight without magazine 915 g | 32.28 oz
Weight with empty magazine graphic
  • Weight with empty magazine 1005 g | 35.45 oz
Weight with loaded magazine graphic
  • Weight with loaded magazine* 1265 g | 44.62 oz
Trigger pull graphic
  • Trigger Pull** 24 N
Muzzle velocity and muzzle energy graphic
  • Muzzle velocity* 330 m/s | 1083 fps
Muzzle velocity and muzzle energy graphic
  • Muzzle energy* 633 J | 467 ft lb

* depending on the ammunition used / ** depending on configuration


1 Length (Overall)* 241 mm | 9.49 inch
2 Slide Length (cpl.) 229 mm | 9.02 inch
3 Width (Overall) 34 mm | 1.34 inch
4 Slide Width 28,5 mm | 1.12 inch
5 Height incl.Mag. 139 mm | 5.47 inch
6 Sight radius (Polymer) 211 mm | 8.31 inch
Sight radius (Steel) 210 mm | 8.27 inch
Sight radius (GNS) 209 mm | 8.23 inch
7 Trigger Distance* 72,5 mm | 2.85 inch

* FOR GEN4/GEN5 MODELS, G19X, G45: Check out the Gen5, Gen4, G19X and G45 Technology area for medium/large backstraps. 

Technical Data are rounded and do not reflect tolerances – they may be altered without notice! Subject to technical changes.

Some magazines might not be available in all countries due to legal regulations.

GLOCK Accessories