The BTR-152 SP Mortar ground support vehicle, armed with a 82mm mortar bolted into position in the troop compartment.  The vehicle is of all-welded steel construction with sloped armour, and the windscreen is protected by twin armoured shutters with integral vision blocks. There are doors on each side of the crew compartment where the driver and commander enter and exit the vehicle. Both crew members can have a side view due to the upper part of the doors that can be opened without opening the entire door. The armour of between 9mm and 15mm provides modest protection from small arms fire and small shell fragments, but does nothing against larger artillery fragments or heavy machinegun fire. The tires are particularly vulnerable to puncture from gunfire of all kinds. There are three firing ports on each side of the hull, and a further two in the rear. The driver and gunner are the only ones that have overhead protection. 

FAPLA BTR-152 Self-Propelled Mortar Ground Support Vehicle

1/300th scale miniature supplied and painted by Johan Schoeman of the Peninsula Wargames Group

Specifications
Weight	9.91 tonnes
Length	6.55 m
Width	2.32 m
Height	2.04 m (without the mg) 2.36 m (with the mg)
Crew	2 (+18 passengers)
Armor	welded steel 15 mm front 9 mm sides and rear 10 mm roof 4 mm bottom
Primary armament	82mm Mortar
Secondary armament	2x7.62mm SGMB light machine guns (1,250-1,750 rounds) on side pintel mounts (optional)
Engine	6 cylinder in-line petrol 82 kW at 3,000 rpm.
Power/weight	8.3 kW/tonne
Suspension	wheeled 6×6
Operational Rnge	650 km
Speed	75 km/h

For more detail on the BTR-152, see Wikipedia.com