Buy Rifles online today from our store. It isfirearm with a rifled bore—i.e., having shallow spiral grooves cut inside the barrel to impart a spin to the projectile, thus stabilizing it in flight. A rifled barrel imparts much greater accuracy to a projectile, as compared with a smoothbore barrel. The name rifle, most often applied to a weapon fired from the shoulder, may also denote a crew-served weapon such as a rifled cannon or recoilless rifle. Although field guns, pistols, and machine guns have rifled barrels, they are not normally referred to as rifles.