Sorry to everyone getting this again.
This was a rather successful experiment of several new techniques for me.
Just note with a detailed description, sketch, or a link to a weapon that needs shoopin'. No preset/existing weapons.Rancor
The deepest malignity or spite; deep-seated enmity or malice; inveterate hatred.
The Rancor Jackhammer was nearly lost in the records of the early Colonial Era as a little known weapon with few examples remaining. The system was looked at again in 523, modernized slightly, rechambered in 20mm MVGP and submitted for the Smooth Bore Assault Weapon field competition. Due to its chambering and various ammo loads it doesn't really fit any standard category as it can be a shotgun, grenade launcher, and to some degree, an assault rifle.
Having ancient roots in combat shotgun history the Rancor maintains the "whatever fits" utility of older weapons, including the ability to accept MetalStorm cartridges instead of its standard shells. This ability allows the operator to fire up to one hundred sabots, thirty low velocity grenades, or ten standard medium velocity rounds from the same size
By tuning the system the operator can adjust the rate of fire depending on the rounds being fired, some weapons have even been fitted with and automatic system to identify the rounds in chamber and adjust the RPM accordingly. The Mk-3 is capable of firing up to five hundred rounds per minute, however that is with sabot rounds and if one were to fire that fast with standard rounds the operator's shoulder/collarbone could literally be broken.
To reduce felt recoil the entire mechanism moves several inches to the rear with each full power shot. This slows down operation but injuries to the user are a greater impediment than fewer rounds down range.
Unfortunately the weapon is terribly complex, prone to jamming, and rare enough to make replacement part acquisition very difficult. The extremely hard charging handle pull doesn't help is earn many fans either.