 Iron sights are commonly used for aiming the rifle, and the front sight alone is sufficient to point the shotgun.Scope mounts are available for some designs.An interesting combination gun is the United States Air Force M6 Aircrew Survival Weapon and its civilian version Springfield Armory M6 Scout, an all-metal folding combination gun in .22 Hornet over .410 bore or .22 Long Rifle over .410 bore.