How a Brügger & Thomet MP9 Works

Wikipedia: The Brügger & Thomet MP9 (Maschinenpistole 9mm, German for "machine pistol") is a submachine gun chambered for the 9×19mm Parabellum cartridge that is designed and manufactured by Brügger & Thomet.

The MP9 is a selective-fire submachine gun. It uses 15, 20, 25, and 30 round transparent polymer detachable box magazines. It has three safeties: an ambidextrous safety/fire mode selector switch button (manual safety), a trigger safety, and a drop safety. The MP9 is a development of the Steyr TMP. The design of the TMP was purchased from Steyr in 2001. Differences from the TMP include a stock that folds to the right side of the weapon, an integrated Picatinny rail, and a new trigger safety.

Type Submachine gun
Place of origin Switzerland
Service history
In service 2004–present
Used by See Users
Wars War in Afghanistan
Production history
Designer Brügger & Thomet
Designed 1992
Manufacturer Brügger & Thomet
Produced 2001–present
Variants See Variants
Specifications
Mass 3 lbs (1.4 kg)
Length 20.6 inches (523 mm) (stock extended)[2]
Barrel length 130 mm
Width 45 mm (stock extended)
Height 246 mm (with 30-round magazine)
Cartridge 9×19mm Parabellum

6.5×25mm CBJ
.45 ACP (MP45)
Action Short recoil, locking rotating barrel
Rate of fire 900 RPM
Muzzle velocity 400 m/s (1,312 ft/s)[2
Effective firing range 100 m (328 ft)
Feed system 15, 20, 25, or 30 round transparent box magazine
Sights Ghost-ring sights

Fully adjustable MIL-STD 1913 Picatinny rail
Tritium-illuminated handgun night sights.