MRT (Multi-Ring) Technology Pin Guard 3 and 5 pin versions come with two multi-ring options, a large and small ring as well as a single. This increased versatility ensures proper peep sight alignment with most setups. The multi-ring options provide the Archer with a much higher level of accuracy in various lighting situations by always giving the Archer a bright visible ring to align your peep. Even more upgrades include a larger, more visible, better protected fiber optic level, and an improved illumination cavity that allows the sight light (not included) to be more evenly distributed and protects unwanted light from escaping. Bullet proof pins completely conceal and protect the fiber. New and improved yardage dial with better grip and more relief on the tape and pointer. Lightweight 6"