Decker Arsenal "Exterminatus"
Cost: 30,500 Terran Alliance Credits (includes 500 Terran Alliance Credit Destructive Device Tax)
Large Rifle
3d6 Piercing Damage
Rate of Fire: Semiautomatic [Recoil-Action]
Ammo Capacity: 9-Chamber Cylinder, Break-Action Reload (Speed loaders available)
Weight: 8 kg (unloaded)
Availability: Military, only available on Earth
Accurate (no penalty when firing at targets at short range)
Mastercraft (+1 equipment bonus to Attack)
Ammo Skip System (As a free action, you can cause the Exterminatus’s cylinder to cycle to the chamber of your choice.)
Produced by the nigh-infamous and somewhat-revered Decker Arsenal of Dallas, Texas in Southern States of America, the “Exterminatus” is a handcrafted, newly-produced rifle, created as a successor to the popular "Ordinatus" pistol that the company manufactures.  The weapon fires the same 21x60mm rocket-assisted round as the Ordinatus, and functions in the same role as the Ordinatus.  However, the Exterminatus is a revolver-style weapon, storing its ammunition in a 9-chamber cylinder, rather than the dual-barrel breech loaded method used by the Ordinatus.  Combined with the integral Ammunition Skip System, this allows the Exterminatus to not only store more rounds than the Ordinatus, but it also provides the user to field a variety of ammunition types without having to fumble with magazines or reload in a hurry.
The Exterminatus is a recoil-operated weapon, utilizing the recoil from the sizable amount of gunpowder that propels the 21x60mm round out of the weapon to cycle the cylinder to the next chamber.  This allows a higher rate of fire than the Ordinatus, but it also increases the complexity and mass of the weapon.
A user with lower than 12 Strength who attempts to use the weapon automatically misses on their attack, suffering 4d6 damage and moving -2 steps on the condition track.  This condition track penalty is a persistent condition, treatable with a DC 15 Treat Injury check made to Perform Surgery.  A user with lower than 14 Strength suffers a -4 penalty on their attack rolls with the Exterminatus.
The 21x60mm rocket-assisted ammunition used by this weapon costs 300 Terran Alliance Credits per round for regular ammunition, but it comes in a variety of additional standard types: Armor-Piercing, Explosive, Frangible, Gel, and Incendiary.  Each round weighs a whopping 0.5 kg.
As a handcrafted, made-to-order piece, the Exterminatus is extremely expensive for a personal firearm – costing 30,500 credits.  The Ordinatus is technically not a rifle according to Alliance weapons law, falling into the category of "Destructive Device" due to its large caliber.  Due to this, there is a 500 credit fee attached to all sales of the Ordinatus to pay for the Destructive Device tax that Decker Arsenal must pay each time they manufacture one of the weapons (this fee is included in the listed price).  The proper license for the weapon costs 6,100 Terran Alliance Credits as well, placing this weapon well out of the reach of the general public.