Aimshot laser bore sighter - AimShot Universal Laser Boresights

I purchased this Aimshot laser boresighter from Cabela's about 10 or 15 years ago. I own the entire system for every caliber I use, including 12 ga shotgun. The .223 laser sight became defective & I was having trouble finding a replacement. My Internet search was sucessful
when I finally found the product at Optics Planet. My nearest rifle range is 35 miles away, so the boresighter is good for getting the firearm on paper before I make the trip. I still have to make final adjustment to the iron sights or scope at the range.