The widely used M109 carries a 155-mm howitzer and is the principal self ... One of the day periscopes can be replaced by a passive night-vision periscope. The Detroit Diesel Model 8V-71T engine ...

Alongside Soviet-origin weapons, which use ammunition measuring roughly 152 mm (6 inches) and 130 mm (5 inches), Western aid has introduced systems to Ukraine firing shells in Western calibres of ...