As early as 1943, German weapons engineers experimented with a recoilless, or fixed gun barrel mounted on a tank. Earlier German successes with recoilless guns resulted in the 75mm L.G. 40 and the larger 105mm version, which were designed to be air-dropped and utilized by German Fallschirmjagers (Paratroops). These weapons eliminated the gun's recoil when it fired by "blowing" the gun's propellant gases (created when the gun fires) outward through a tube situated to the rear of the gun mount.

A vehicle mounted version, however, would utilize a different method. Instead of discharging gasses, a gun mounted on a vehicle would actually be fixed to the chassis so that recoil would be absorbed and the barrel not blown back into the crew compartment. Simply put, this "fixed" gun would not recoil but also would not discharge propellant gases normally associated with recoilless rifles. Such a creation would simplify manufacture, use less materials, increase crew space within the vehicle, and make the gun more accurate (the lack of recoil keeping the gun on target).

In October, 1944 it was decided to mount a fixed gun on the Jagdpanther for testing. The 88mm gun was lengthened and the front plate of the tank moved forward providing a counterbalance. The rods connected to a Cardan frame would then direct recoil from the front plate deep to the frame within the chassis. Essentially, the tank would disperse and absorb the gun's recoil instead of the gun recoiling back into the crew compartment. A blowback opener on the breech would allow the gun to then be reloaded. Test results were excellent, the Jagdpanther only moving backwards from recoil an amazing 65mm!

Plans called for installation of the fixed gun on the Jagdpanther, but these never were acted upon. In Panthers East! the Jadpanther can use the fixed gun if desired. This will give the Jagdpanther -2/- Acquired Target bonus instead of the standard -1/-2. Also, the autoloader rules found for the Panther ausœ F can also be used as both guns were planned to utilize similar autoloaders. Unfortunately though, the Panther ausf. F cannot have a fixed gun because of its turret.

Try the fixed gun and autoloader together for a "souped-up" Jagdpanther that was planned to actually go into the field. Hit It Again and Steinau Bridgehead from Panthers East! would be excellent scenarios to test these special yet deadly Jagdpanther additions.