While mass production was initially recommended, the end of the war with Germany in May 1945 eventually caused the project to be cancelled due to lack of necessity.

While the latter, based on the chassis of the T-34 medium tank, proved satisfactorily in combat, its basic layout with crew compartment in the front and engine in the back was considered a flaw.

Additionally, the SU-100 was very front heavy, which resulted in excessive stress on the forward road wheels, risking mechanical failure.

Yet these issues were deemed solvable and the vehicles were recommended for mass production after application of several modifications to address the prototypes' problems.

Thus, even a long-barreled gun only slightly increased the overall vehicle length, improving maneuverability and eliminating one of the SU-100's major deficits.

The layout also spread the vehicles weight more evenly among the road wheels, addressing the mechanical issues faced by the front heavy SU-100.

[1] The Uralmash-1's hull was made from plates of rolled homogeneous armour, welded together in a sloped fashion to give it improved protection.

[1] The Uralmash-1's vehicle commander was additionally provided with a 12.7 mm DShK machine gun mounted in his roof hatch for use as an anti-aircraft weapon.

[1] The Russian designation "SU", meaning Samokhodnaya Ustanovka or self-propelled gun, is a rather diffuse term that was equally applied to vehicles which in combat fulfilled the roles of dedicated tank destroyers, infantry-supporting assault guns, and even indirect-fire artillery, i.e. self-propelled howitzers.

However, in the course of the war, the gun had also proved to be a very effective anti-tank weapon, capable of knocking out even heavy German tanks, and armour-piercing kinetic energy ammunition had been developed to augment this battlefield role.