Complex sentence: The APX-R turret was the same standard type as used on the R35 and R40 tanks, made of 40 mm cast steel and armed with the short 37 mm SA 18 gun, which had a maximum armour penetration of only.
Split into simpler sentences: The APX-R turret was the same type as used on the R35 and R40 tanks. Made of 40 mm cast steel and armed with the short 37 mm SA 18 gun, which had a maximum armour penetration of only.