SA 58/98 Bulldog sub-machine gun, 9mm
Development (This Information From Janes Infantry Weapons)
With the reduction in numbers of the Czech and Slovak armies, the Czech defence infrastrucure has a surplus of Model 58 7.62 mm assault rifles (see entry under Rifles). Many of these rifles are being stockpiled, but in an attempt to make good use of at least some parts of these rifles, the Czech Military Institute for Weapon and Ammunition Technology(VTUVM) has utilised many Model 58 rifle components to produce the Sa 58/98 Bulldog 9 mm sub-machine gun, a relatively low-cost firearm intended to attract export orders. The Sa 58/98 Bulldog (Sa - Samopal - sub-machine gun) is chambered for the 9×19 mm Parabellum cartridge.
In the conversion from the Model 58 7.62 mm assault rifle to the Sa 58/98 Bulldog 9 mm sub-machine gun, it would appear that the only original components utilised are the trigger and grip assembly, complete with the selective fire mechanism and parts of the receiver. The original operating mechanism has been replaced by a blowback system and the original magazine housing has been modified to accommodate a straight box magazine holding 30 9 × 19 mm Parabellum rounds. The butt-stock is replaced by a simple single-strut design folding to the left. It is not certain if a cut-down barrel has been bored out to the 9 mm calibre or if a new barrel has been installed.
The top of the Sa 58/98 Bulldog receiver can be used to mount an optical or night sight and a laser aiming device can be installed.
9 mm Sa 58/98 S
The Sa 58/98 S is a silenced version of the Sa 58/98 Bulldog having a reduced length barrel (180 mm) and a permanently fitted sound suppressor, which increases the overall length of the firearm to 810 mm with the butt-stock extended. The suppressor reduces the muzzle velocity to 300 m/s when firing conventional ammunition.
Cartridge: 9×19 mm Parabellum
Operation: blowback, selective fire
Feed: 30-round box magazine
Weight: empty, 2.8 kg, (Sa 58/98 S, 3.5 kg)
Length: Sa 58/98; butt retracted, 445 mm; butt extended, 660 mm; Sa 58/98 S; butt retracted, 595 mm; butt extended, 810 mm;
Barrel: 200 mm (Sa 58/98 S, 180 mm)
Rifling: 6 grooves, rh
Sights: fore, post, adjustable for windage and elevation; rear, fixed notch
Sight radius: 250 mm
Muzzle velocity: 380 m/s (Sa 58/98 S, 300 m/s)
Rate of fire: cyclic, 800 rds/min
Diouha 300, CZ-763 21 Slavcin.
Photo by TJ Gander
Picture and information courtesy of: ?