Military Wiki
FN "Trombone"
Type Rifle
Place of origin United States
Service history
Used by Unknown
Wars Unknown
Production history
Designer John Browning
Manufacturer Fabrique National
Produced 1922-1974
Number built 150,000
Variants See text
Weight 4.4 lb (2.0 kg)
Length 39 14 in (1,000 mm)
Barrel length 20 in (510 mm)

Caliber .22 Short, .22 Long, .22 Long Rifle
Action Pump-action
Effective range 165 yards (150 meters)
Feed system 11-round tubular magazine
Sights dovetail front and elevation-adjustable rear

The FN Browning Trombone is a pump-action long takedown rifle designed by John M. Browning in 1919, patented on 1 August 1922 and manufactured by Fabrique Nationale d'Herstal Belgium from 1922 to 1974. Models manufactured post 1969 had a product code W.

The rifle has a .22 calibre chamber, a tubular 11-round magazine, 24-inch round barrel, wooden semi-pistol grip stock. Models made in the late 1960s featured a dovetail notch for mounting scopes.

The stocks of early models were susceptible to cracking, sometimes attributed to the shape of the receiver; later models, such as the dovetail scope variant, appeared to solve this problem. The pump grip of all models is susceptible to cracking, the wood between the magazine and barrel being especially thin, this rarely detected unless the rifle is disassembled.

In the U.S., where only Colt-manufactured Browning designs are sold due to the FN/Colt regional exclusivity agreement, the rifle is rare.

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