The Burris Handgun Scope is a compact scope with a long eye relief, ideal when hunting with a powerful handgun. The double internal spring-tension system allows the scope to hold zero through shock, recoil and vibrations, while positive steel-on-steel adjustments ensure repeatable accuracy. The scope has a 1 piece, 1" tube and is nitrogen-filled to prevent internal fogging. The index-matched, multi-coated lenses maximize contrast in low-light settings, while eliminating glare and providing superb clarity. Features the Posi-Lock system which uses a retractable steel post, in addition to the conventional adjustment system, to keep the point of aim firmly in place under the harshest recoil.