FNAB-43 Sub-Machine Gun

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Valerio_
view post Posted on 9/11/2007, 17:01




FNAB-43 Sub-Machine Gun

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This little known weapon was designed and developed in Italy during the war and manufactured during 1943-44. It is believed that no more than 7,000 were built and all were issued to the German and Italian units fighting in Northern/Center Italy.

A similar total came produced also for the German troops in Italy.
One of the remarkable things about this weapon was that, at a time when the general tendency was to build quick and cheap weapons, the FNAB-43 called for expensive engineering and time-consuming methods of precision engineering in its construction. It was a well-made and efficient weapon.

The action is a delayed blowback of unique design, firing from the closed bolt position. The bolt is a two-piece unit with a pivoted lever interposed between bolt head and body. On firing the bolt head moves back and begins to rotate the lever, the toe of which is abutting against a lug in the body. This lever is pivoted so as to delay the opening movement by operating at a mechanical disadvantage, allowing the bullet to leave the barrel and breech pressure to drop before the lever has completed its rotation. The movement of the lever then presses the free end against the bolt body and accelerates the bolt to the rear. The toe of the lever pulls clear of the lug and the whole bolt unit can recoil as one component in the usual way. On returning, the lever engages once more with the body lug and pivots forward, and in doing so removes an interlock that allows movement of the firing pin only when the bolt is fully forward. This unusual and complicated system allows the rate of fire to be kept down to very practical limits without using a heavy bolt or strong spring.

Other features of this weapon included a muzzle brake and compensator built into the barrel casing in the manner of some of the Russian weapons, and a magazine housing that is hinged so that the magazine can lie beneath the barrel. The stock, a single metal bar, also folds, so that the weapon can be carried as a very compact unit

L' FNAB 43 came used from the “Special Forces of the RSI”, of the "Black Shirt fascists of the MVSN", from "X Decima Mas" and the "Divisione San Marco."
The first prototype came developed in 1942.

The German army defined it "Die Beste italienische".

Caliber : 9 mm/ 9 mm Fiocchi
Barrel : 6 grooves with right hand twist
Length : 31.15 inches
Barrel Length : 7.8 inches
Weight : 8 Pounds 12 Ounces
Feed System : 20 or 40 round detachable box magazine
Rate of Fire 400 : Rounds Per Minute
System of Operation : Delayed Blowback, Selective Fire


Sources:
-Ian Hogg ,Encyclopedia of Infantry Weapons of World War II
-Wikipedia
-www.secondeguerre.net
-Comandosupremo.com

(Scusate, ma appena posso lo tradurrò)

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