BoreView
BoreView, * End stamped with "MY VIEW CO." and patent #.* High-grade glass mirror in all aluminum casing that fits into your barrel. * Allows view of entire interior of barrel to see obstructions, cleanliness or quality. * Fits into .30 caliber or larger barrels. Can be used with smaller calibers (ex. .223) by placing tool against face of chamber and aligning mirror with barrel.