This is the replacement O-Ring set for the .40 S&W Gen 2 G-Sight Training Laser. This item contains 2 sets of the O-Ring pair; each pair consists a front and and a back O-Ring.
- Authentic parts from the original factory that makes the G-Sight gen 2 Laser cartridges. Guaranteed to be of the same quality as in the original product.
- O-Rings are consumable parts. It is highly recommend to keep an extra set around for all your laser cartridges, if you practice dry fire on a regular basis.