In 1929 the Union was in a bind, it needed something to equal the rapidly accelerating research by the Confederates into "Storm Rifle" or heavy-framed high-caliber automatic weapons, as per the term "Storm rifle" a weapon must be capable of delivering a withering rate of fire against targets at varying distances whilst bearing a large if not disruptive caliber. Sherman Steel Company was contracted by the state department to find a way to scale down some of the naval Gatling Guns to a more useful format.
Sherman Steel was considerably out of it's league, apparently, Krupp had been producing variants of gatling technology for a couple of decades. After around four years of pure R&D the combined efforts of the two companies allowed them to produce a functioning gatling machine-rifle, the only issue being that it weighed thirty pounds. Finally, after two more years of further R&D the program finally solved the weight problem and bore the ever-so-sweet fruit of success.
The finished version of the Gatling Rifle was the "Sherman-Krupp LB36 Mechanisierte-Rotierend-Gewehr" or "Otto" as Union troops would come to call it due to the man who had the break-through in research for this weapon's charge system being named "Otto Falkenberg". The "Otto" fires a Self-Rifled 7.92x45mm JSP cartridge. The magazine is gigantic, around a foot and a quarter in total length. Upon loading the weapon, the breach must be opened and a magazine inserted, with the magazine loaded the soldier must tug it and let it smack forward, upon having done this the odd looking device sticking out from under the foregrip's little status light will begin to blink very faintly, this means that the teslatic rotation system has gained it's basic voltage due to the static-collection system built within the chamber.
After the teslatic charge-core enlightens the user of it's current status, the operator must then proceed to depress the trigger and slaughter his foes, upon depression of the trigger, a small amount of residual charge gets sent into a reserve charge-core in the stock allowing for an immediate storm of lead. Yes though, back onto the topic of barrel rotation, with depression of the trigger the teslatic coil enshrouding the barrel-clusters wind-mechanism gains it's charge and begins to rotate the barrels, upon full rotation. Which can take a total of a five milliseconds due to the immensely high yield teslatic charge technologies can produce and the weapons withering rate of fire becomes close to that of an MG18.
The magazine holds a total one-hundred and fifteen rounds, "How is that possible?" you may ask, but as the reader you must understand that the "Otto"'s magazine is triple-stacked in regard to ammunition. As far as Storm-rifles go, it's one of the more reliable, if not one of the more devastating in it's killing potential, some soldier's are asking for a tripod and ammunition canisters for this type of weapons system.