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Submachine guns

Spectre M4

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Spectre M4 submachine gun appeared in 1983 and has a number of unusual features. The designer set out to develop a weapon which could be used in an instinctive and automatic manner, so that the user could open fire instantly without having to consider the safety condition or perform any action other than pulling the trigger. The intention was to provide a weapon for anti-terrorist police and other who need to carry a weapon daily but may not be called upon to use it except at rare intervals; and when that time comes, it has to be ready for use without hesitation.

The Spectre M4 looks conventional enough, with a pressed steel receiver and barrel jacket, and a butt which fold to lie along the top of the receiver. The magazine fits into a housing ahead of the trigger and is the first unusual feature; it contains four columns of cartridges instead of the usual two. This means that the 30-round magazine is no longer than a conventional 20-round, and the 50-round no longer than a normal 30-round.

The operation is also unusual. After inserting a magazine, the cocking handle is pulled back and released in the normal way. But instead of the bolt remaining back, it runs forward and chambers a cartridge. A “hammer unit” remains at the rear of the receiver; but pressing a de-cocking lever allows this unit to run forward under control and stop a short distance behind the bolt. The weapon is now perfectly safe to carry, and will not fire if dropped or mishandled. But as soon as it becomes necessary to fire, all that needs to be done is to squeeze the trigger. This will retract the hammer unit from its rest position and then release it with sufficient force to hit the firing pin in the bolt and fire the cartridge in the chamber, after which the action is automatic until the trigger is released.

Since the bolt is always closed when the gun is at rest, it might be expected that the barrel will heat up when firing and not cool very quickly; this is countered by a forced draught air system, operated by the movement of the bolt, which pumps air through and around the barrel while firing.

The basic Spectre M4 submachine gun is accompanied by three variant models; the “Spectre PCC” (Police Compact Carbine) which fires single shots only and has a longer barrel; it can also be fitted with a silencer. The Spectre Carbine is long-barreled and fires only single shots. And the Spectre Pistol is the basic Spectre but without stock or foregrip, and fires single shots only. The Police Carbine and Pistol versions are available in .40 Smith & Wesson caliber as well as in 9 mm Parabellum.

Technical specifications of Spectre M4 submachine gun

Manufacturer: Sites SpA, Torino, Italy
Type: Blowback, selective fire, double-action
Caliber: 9 mm Parabellum
Barrel: 5.12 in (130 mm)
Weight: 6.4 lbs (2.9 kg)
Magazine capacity: 30 or 50 rounds
Cyclic rate of fire: 850 rounds per minute
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