So, I'm shameless! Also, this thing:
Lemniscate Series, Model C - man-portable, selective-fire, automatic railgun. Has a 150-round drum mag or 45-round box mag and a six-stage fire selector (Off, On, Safe, Fire, Automatic, Burst). Also note the weird P90 thing in the lower right corner.
Basically, it's an assault rifle-type railgun, using the same basic design principles as the Lemniscate-A (a revolver), albeit with a much heftier battery and longer barrel to generate a much greater projectile velocity. It does, however, use the same bullets, making the Lemniscate-C a .30 caliber rifle. Battery's meant to provide enough power for each round to travel at least 800 to 1000 meters accurately, giving the Lemmi-C battle-rifle-grade firepower while its barrel axis (inline with the center of the stock and barely in line with the shooter's hand) allows the weapon to be reasonably controllable compared to similar conventional battle rifles and GPMGs (the weapon's nearly all-alloy construction does give it some serious weight, which probably helps too). The Lemniscate-C weighs 12 pounds, or 5.4 kilograms - 16 pounds/7.25 kilograms loaded with a 150-round drum or 13.2 pounds/6 kg with a 45-round box.
The bullets are, unless otherwise stated, 147-grain 7.62x51mm NATO rounds sans cartridges, composed of metal more conducive to railgun operation (mainly something influenced by magnets, as copper and lead are not magnetic).