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Steyr TMP
Steyr TMP
Country of origin

Austria

Designer(s)

Steyr

Production began

1992

Production ended

2001

Weapon type

Machine pistol

Caliber

9x19mm Parabellum

Action

delayed blowback, locked breech, locking rotating barrel, short recoil

Overall length

27.98 cm (11.1 in)

Barrel length

15 cm (6 in)

Weight empty

1.3 kg (2.9lb) empty

Magazine/Cylinder capacity

15/20/30 round detachable box magazine

Cyclic rate

800-900 rpm

The Steyr TMP (Taktische Maschinenpistole/Tactical Machine Pistol) is a compact, magazine-fed, select-fire SMG, chambered in 9x19mm. It fires from a closed bolt, and is known for its controllability during full-auto fire.

In 2001, Steyr sold the design to Switzerland manufacturer Brügger & Thomet, who developed it into the essentially same MP9.

Design detailsEdit

The Steyr TMP is a blowback-operated, locked breech design, with a rotating barrel. When the shot is fired, the bolt and barrel move backward slightly. This causes the barrel to rotate clockwise slightly, which unlocks the bolt and allows the weapon to cycle. The rotation is controlled by a small cam pin on the barrel that follows the spiral groove inside the receiver. The charging handle is located on the rear of the weapon.

Both the upper and lower receiver are made from polymer. The TMP has no stock, which precludes the firing of the weapon from the shoulder; it can be fitted with a wire stock, however. For additional stability, the TMP has a vertical foregrip.

The safety features on this firearm include an automatic out-of-battery safety (prevents firing out of battery), a drop safety, and the manual safety switch.

VariantsEdit

Steyr SPPEdit

The civilian variant is the Steyr SPP. It has no vertical foregrip and is semi-automatic only.

Brügger & Thomet MP9Edit

In 2001, Steyr sold the design to Swiss manufacturer Brügger & Thomet who started producing it again under the name MP9

GalleryEdit

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