Here you go TerraN. Some very nice fire power on the Russian/French Atom IFV
57 mm BM-57 rifled autocannon
The ATOM prototype possesses is a 57 mm BM-57 automatic gun. This rifled autocannon is a modification of the Soviet 57 mm S-60, developed by the company Petrel. This high caliber autocannon has an effective range of 6 km and fires at a rate of 120–140 rds/min. The turret traverses 360° across the azimuth and has an elevation range between −8° and +70°. 80–100 rounds are carried within the turret with an additional 100 stowed away. The 57 mm automatic cannon provides engagement of light armoured and soft targets, ATGM crews, and even aerial targets (UAVs, precision-guided munitions, aircraft and helicopters). It takes 1–3 seconds to change the type of monition for the cannon.
I will now get back to bottling my Malbec