The establishment also builds a wide range of other tank and artillery barrels as well as towed artillery systems, rocket launchers and ground-based mortar systems. It is fitted with a double baffle muzzle brake, fume extractor, screw breech mechanism, hydro-pneumatic recuperator and a hydraulic recoil brake. Although the general layout of the Thunder 2 is similar to the M109A1 it does feature a new turret and chassis. The former has hatches in the sides and two roof hatches with a 12.7mm M2 machine gun mounted on the cupola installed on the right side of the turret roof. The indirect fire sight is located under an armoured hood on the left of the turret roof.
Suspension is probably of the torsion bar type with six dual rubber-tyred road wheels each side.
The drive sprocket is at the front and the idler is at the rear. The are also return rollers and the upper track is covered by a rubber skirt. The road wheels of the Thunder 2 appear to be from the Russian T-72 main battle tank that has been manufactured under licence in Iran for some years. In the rear of the hull is a large door for ammunition resupply purposes.