XSCT-810 "Ranger Special"
Caliber: 8mm XSPR / 30mm HE Grenade
Capacity: 35 rounds / 1 grenade
Action: lever-delayed blowback
The select-fire assault carbine used by New Cordian Expeditionary Rangers, the XSCT-810 fires the experimental 8mm XSPR round, which is the standard 10mm Auto round of the New Cordian military necked down to an 8mm plastic sabot which contains a 5mm tungsten projectile. This gives two major advantages: it's armor-piercing, capable of penetrating armor similar to that used in Russian BMP carriers. It's lighter and smaller than standard assault rifle cartridges, so Rangers can carry a lot more ammo. Useful, given that their MO is to stay out behind enemy lines with no support for as long as possible.