The PT-76(M) has a Cockerill Mk.III-A2 (which can not use APFSDS as far as I have found in Cockerill sources) and has the very recognisable triple-baffle muzzle brake.
The Nimda PT-71 in the image has a Cockerill Mk.III A1, seen from the MECAR single-baffle muzzle brake. This means it can use APFSDS munitions (the one shown in your image).
I’m impressed you managed to find a picture of the PT-71 with the cockerill gun, as I have not been able to. Great work!
Autoloading 'Brams
M1A1 with Megitt’s unique bustle autoloader (34 round ammunition capacity)
Very compact and a fourth crew member/loader could still be retained/seated inside the turret.
Challenger 2 LEP was supposed to get a bustled autoloader as well.
Fairey Hydraulics was contracted to develop a conveyor-belt autoloader designed to handle the ammunition of the L30 120mm rifled gun.
Had a 20-round capacity and could be loaded from both outside and inside the tank.
Fire rate was 1 round per 8 secs (7.5 RPM) and a three-round burst of taking 21 seconds (8.5 RPM).
Challenger 2 L/55
In 2005 a Challenger 2 was modified by BAE to mount the Rheinmetall 120mm L/55 smoothbore gun with the L30’s MRS and fire control system.
The issue with this mod (Normally called the CLIP, Challenger Lethality Improvement Programme, as the L30 is already an L55 gun) is only the bustle was modded, the hull and basket stowage was left as is. So you get 6 rounds total.
Welcome the F-14D to war thunder in the new update (insert update name here)! This American cat includes multiple unique features, including integration of the AIM-120A AMRAAM!
Introducing the F-14D as a premium vehicle at rank VIII