Ultra AutoCannon/20

The Ultra AC/20 is the largest bore Ultra Autocannon. Like all Ultra autocannons, it is capable of twice the rate of fire of a standard autocannon, doubling its heat output and, potentially, its damage. Only the brand new Clan HAG 40 can match the sheer damage output of the Ultra AC/20, though even that cannot place 20 points of damage squarely in a single target area. The only weapons that are capable of delivering more damage to one location are the Heavy Gauss Rifle and the experimental Improved Heavy Gauss.

Variants
In the years between the Second Exodus and the beginning of Operation KLONDIKE the nascent Clans began development of what would become the Ultra Autocannon/20. Experimental prototype versions of this new weapon were used during Operation KLONDIKE in small quantities. The Clan Prototype Ultra Autocannon/20 available during this period has identical stats to the Inner Sphere Ultra Autocannon/20, with the following differences: the Ultra Autocannon/20 occupies one additional critical slot, and suffers a weapon jam on a to-hit result of 2 or 3.

Models
The Ultra AC/20 is manufactured on the following planets in the Inner Sphere: