FN Baby Browning

The FN Baby Browning is a small blowback-operated semi-automatic pistol designed by Dieudonné Saive based on a design by John Browning (among Browning's last designs) and chambered in .25 ACP (6.35×16mmSR). The pistol features a six round magazine capacity and is a striker-fired, single action, blow back mechanism. The manual thumb operated safety locks the slide in the closed position when engaged using side thumb pressure.

FN Baby Browning
Class Manportable
Type Handguns
Manufacturer Fabrique Nationale
Origin Belgium
Country Name Origin Year
Belgium 1931
Country Name Operational Year Retirement Year
Belgium View
ManufacturerName Production From Production To Quantity
Fabrique Nationale 1931 View
Manufacture d'armes de Bayonne 1931 View

FN introduced the revolutionary model 1905 in 1905. Despite the name FN used for this pistol, it was later marketed as the "M1906", the "V.P. .25" (V.P. denoting Vest Pocket), and most confusingly, the "Baby" model. This pistol was introduced more or less at the same time the 6.35x16mm .25 ACP cartridge became widely available. The term "ACP" stands for "Automatic Colt Pistol". This cartridge was among the first automatic pistol cartridges to be utilized worldwide. It was designed with a "semi-rimmed" shell casing made of brass. The rim of the shell casing had a slightly larger circumference than the base of the cartridge and an extractor groove was cut directly above it. The shell casing head was spaced on this small rim; however, the utilization of the rim in this design complicated the mechanics of the cartridge because the rim would sometimes get hung up on the extractor groove of the cartridge while still in the magazine.

The M1905/M1906 Vest Pocket pistol incorporated a grip safety mechanism that constituted the entire rear section of the grip. This particular safety mechanism required a significant amount of hand palm pressure to disengage and allow the trigger to release the striker to fire the pistol. Colt produced a nearly identical pocket pistol, the Colt Model 1908 Vest Pocket, which incorporated a small safety lever on the left side of the receiver which locked the trigger. In addition, this safety lever mechanism locked the slide about a half inch back from the front of the pistol to enable easy disassembly. FN also added this safety lever mechanism to its pistol, but did not add the magazine safety mechanism that Colt introduced in 1916.

Type Pistol
Place of origin Belgium
Service history
Used by French Resistance, US Air Force
Wars World War II
Production history
Designer John Browning
Dieudonné Saive
Designed 1927
Manufacturer Fabrique Nationale de Herstal
Manufacture d'armes de Bayonne
Precision Small Parts, Inc.
Precision Small Arms, Inc.
Produced 1931–present
Weight 275 g (9.7 oz)
Length 104 mm (4.1 in)
Barrel length 53.6 mm (2.11 in)
Height 72 mm (2.8 in)
Cartridge .25 ACP 6.35mm
Action Blowback-operated semi-automatic
Muzzle velocity 230–500 m/s (750–1,640 ft/s)
Feed system 6-round sealed bottom, flat follower magazine; a rounded follower and removable inner and outer bottom plates were incorporated in 1984
Sights Fixed iron notch and blade

End notes