Red-i-Laser Bore Sight is made out of high-grade brass and stainless steel for maximum durability with a high quality laser, which is aligned and checked 100%. This product is easy to use very effective.
The alignment of the internal laser according to the actual external dimensions of the cartridge is the most important aspect of a good bore sight, and this is also the sole reason why only Red-I-Laser Bore Sight give you a repeatable and reliable reference every time.