British Vickers Medium Machine Gun All-Steel Feed Block: Scarce Antique Guns and manufactures

and manufactures

which was also know as the Italian Beretta Model 38/42 fluted barrel Sub Machine Gun

following the Angolan War of Independence of 1961-74

Answer: Look at the air-vent lugs

British Vickers Medium Machine Gun All-Steel Feed Block: Scarce Antique Guns and manufacturesOriginal Item: While the vast majority of Vickers machine gun feed blocks were made of brass, a few were made of steel because of the improved wear characteristics. The manufacture of the steel blocks was discontinued, however, because of the greatly increased time to machine them. Consequently, all steel blocks are hard to find today. IMA has found a few of these steel blocks. They fall into two groups: blocks marked D. P. (for Drill Purpose, or