In 1942, the British government instituted a development program to design a new simplified rifle to replace the No4 MkI Lee Enfield. The CSAD (Central Small Arms Department) came up with a design using a quite simple receiver machined form a small steel billet. It was a rifle wholly distinct form the Enfield, although both were chambered for the .303 British cartridge. The simplified rifle used a front-locking bolt, a simplified cocking piece, and had a magazine holding just 6 rounds. The sights were a simple 300/600 yard rear aperture, and a crude spike bayonet could be fitted either forward for use or rearward for storage.
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Terni M91 Carcano Semiauto conversion
This rifle started out its life an a normal M91 Carcano long rifle, before being converted into an experimental self-loader by the Terni Arsenal. Rather than adding a gas piston to the barrel, Terni engineered a short recoil system. The barrel and bolt recoil together about a centimeter (3/8 inch) upon firing. Instead of the original bolt with two lugs and a 90-degree throw, a new 8-lug bolt was used, which only requires a slight amount of rotation to unlock. That unlocking is done by an angled wedge that the bolt travels up as it recoils rearward.
The rifle is still chambered in the original 6.5x52mm caliber, using standard 6-round Mannlicher style clips. The date of the conversion is not clear, although the base rifle was manufactured in 1908.Thanks to Beretta for graciously allowing me to have a look at this rifle! An ultimate Italian weapons recollection
