The Glock 18 is a select-fire, fully automatic machine pistol chambered in 9mm, developed in 1987 for elite law enforcement and military counter-terrorism units. Mechanically derived from the Glock 17, it adds a slide-mounted selector switch enabling both semi-automatic and fully automatic fire at a cyclic rate of approximately 1,200 rounds per minute.
Specifications
Caliber: 9 mm Luger
System: Select-Fire Safe Action® — Semi-Automatic and Fully Automatic
Magazine Capacity:
Standard: 17 rounds
Optional: 19 / 24 / 31 / 33 rounds (extended)
Barrel Length: 114 mm (4.49 in)
Overall Length: 204 mm (8.03 in)
Cyclic Rate: ~1,100 – 1,300 rounds per minute
Fire Selector: Slide-mounted switch (up = semi-auto, down = full-auto)
Weight:
Without magazine: ~620 g (21.9 oz)
With loaded magazine: ~905 g (31.9 oz)
Trigger Pull: ~5.5 lbs (semi-auto mode)
Frame Material: Polymer (modified rail geometry — not interchangeable with G17 frame)
Finish: Tenifer / nDLC (depending on generation)
Sights: Adjustable rear (windage), fixed front
Magazine Compatibility: All standard 9mm Glock G17-frame magazines
Availability: Law enforcement and military only — not sold to the civilian market
Pros
Unmatched rate of fire — ~1,200 RPM delivers extraordinary close-range suppressive capability
Select-fire versatility — quickly switches between precise semi-auto and full-auto modes
Compact, concealable form factor similar to the Glock 17 — fits standard G17 holsters
Compatible with all standard 9mm Glock magazines, including extended 33-round capacity