The Radically Invasive Projectile is a type of expanding projectile created by the G2 Research company in 2014.[1] It is meant to possess higher penetration capability and velocity than other expanding rounds.[2] Currently, it is available for common handgun calibers from .380 ACP to .45 ACP. For rifles, it is only usable with subsonic centerfire cartridges from .223 Remington to .308 Winchester. For shotguns, only a 12-gauge slug is offered.[3][4]