 Some more complex improvised firearms are not only well-built, but also use mimicry as camouflage, taking the appearance of other items.Improvised firearms in the form of flashlights, cellular telephones, canes and large bolts, have all been seized by law enforcement officials.Most of these are .22 caliber rimfires, but flashlight guns have been found ranging from small models firing .22 Long Rifle to larger ones chambered for .410 bore shotgun shells.