I
Firearm whose barrel is rifled (i.e., has spiral grooves cut inside it to give a spin to the projectile).
Though usually applied to a weapon fired from the shoulder, the name can also refer to a rifled cannon . Rifled firearms date to at least the 15th century, when it was discovered that imparting a spin to the bullet improved its range and accuracy. The earliest muzzle-loading rifles were more difficult to load than smoothbore assault rifle .
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[c mediumvioletred] (as used in expressions)
assault rifle
M16 rifle
National Rifle Association
{{link=Springfield rifle">Springfield rifle