sentences:  In order to be effective against enemy armor, the howitzer was intended to fire shaped charge rounds.The turret was removed and four 10-20mm thick steel plates were used to construct a completely enclosed casemate onto the hull.The initial prototype was built in Bucharest at the Rogifer works (former Malaxa factory, currently FAUR) with the assistance of engineers Constantin Ghiulai (designer of the TACAM R-2) and Radu Veres (director of Rogifer).