Sightmark, .223 Laser Bore Sight, Provides The Most Convenient & Accurate Method For Sighting In Rifles Of All Types, Simply Chamber The Bore Sight Like A Regular Bullet & A Laser Dot Will Show Exactly Where The Rifle Is Aiming, Easy To Sight In Any Scope Without Firing A Single Shot, Live Fire Is Only Needed To Fine Tune The Weapon Being Sighted In Order To Compensate For Inconsistencies, Such As Bullet Drop Due To Distance, Perfect For Hunters, Competitive Shooters & Law Enforcement, Easy To Use & Will Quickly Save Both Time & Money By Avoiding Prolonged Live Fire Tests At The Range, Use The Extra Ammo For Honing Those Shooting Skills & For The Hunt, Lightweight Carrying Pouch Protects The Laser For Convenient Use In The Field, Available In Several Calibers & Gauges For Use With All The Most Popular Rifles.