UNIVERSAL STANDARD LASER BORE ALIGNMENT KIT LBS-0006-140 Universal Standard Laser Bore Alignment Kit Quickly sight in any rifle or pistol from .22 to .50 caliber, with this single universal kit, (12-20 gauge shotgun adapter also available). It comes complete with 4 adapters to adjust across all these caliber ranges. Simple and very easy to use, this Laser Bore Alignment Kit allows the adjustment of any scope or iron sights to within a couple of inches of the bulls-eye at up to 100 yards. The Laser Bore Tool is precision CNC machined from aircraft aluminum and hardened with a very durable finish to maintain the precision surfaces. Each unit is calibrated at the factory, utilizing high precision alignment tooling. Length is 6 inches and .625 diameter at head, weighing only 1.2 ounces. It can easily be packed and taken to camp for a quick check of sights. It operates on (3) inexpensive A-76 type batteries which power the laser for over 1.5 hours of continuous use. SPECIFICATIONS: COMPATIBLE CALIBERS: .22 - .50 CALIBER POWER OUTPUT:class IIIa, 5mw LASER MODULE: 650nm BATTERIES: 3-A76/LR44 BATTERY LIFE: 1.5 hours + WEIGHT: 1.3oz LENGTH: 6.125" YARDS: 500 yards at night BARREL: Minimum 4 inch barrel required. The Universal Laser Bore Sighter Kit comes complete with 4 adapters (covering any caliber from .22 cal. to 50 cal.), carrying pouch, Daylight Laser Target, batteries and instructions.