This submachine gun was produced by the Fábrica do Braço de Prata weapon factory at Lisbon, whose initials FBP gave the name to the weapon, adopted for service as the m/948 in 1948. It utilized the large bolt and telescoping operating spring of the German MP40 submachine gun, and the collapsible wire stock of the American M3 submachine gun.[2]. Unusual for submachineguns, the m/948 was fitted with a barrel sleeve with a mount to accept the standard Portuguese Mauser bayonet. The original version of the submachine gun (the FBP m/948) only allowed for fully automatic fire. An upgraded version ( designated FBP m/963) introduced in 1961 also allowed for semi-automatic fire.

FBP-9 80% Original ID Receiver Code: FBPOID Price: $140.00 Quantity in Basket: none

FBP-9 80% Reduced ID Receiver Code: FBPRID Price: $120.00 Quantity in Basket: none

Add FBP Receiver Fluting Code: FBPFlute Price: $40.00 Quantity in Basket: none

FBP-9 (SAS3) 80% Reduced ID Receiver Code: FBPRIDsas3 Price: $130.00 Quantity in Basket: none