155 mm Cannon gun M109

Description

Hadid 155 mm 39 caliber barrel is of mono block construction with an interrupted screw breech mechanism. The riffling has a constant 1:20 twist and there are 48 grooves. High-strength alloy steel is used throughout the barrel construction and heat treatment and autofrettaging are employed to provide maximum barrel life. Separate recoil and recuperator system are used in what is stated to be a variable length hydropneumatic independent design. It adopts a common chassis for its self-propelled artillery units. The Double-Baffle muzzle brake is flush with the forward edge of the hull, and the bore evacuator is located midway along the bore. TECHNICAL SPECIFICATIONSModelHM 44Caliber155 mmLength of barrel39 cal. (6095 mm)Max. rangewith HE22 kmWith RAP and BB30 kmMax. rate of fire4 rds. /minNr. of Grooves48Elevation-3˚C ~ +75˚CMax. chamber pressure3500 barMuzzle BrakeDouble baffleOverall weapon weight2500 kgAmmunition Type (NATO 155 mm AMMO)HE