The Burris 2-7x32mm Scout Rifle Scope has been designed to be the perfect scope for all of your shooting needs. This Scope from the experts at Burris is made with a Posi-Lock system that is a coil spring assisted retractable steel post that firmly and & securely locks accuracy into place. The Burris 2-7x32mm Scout Ballistic Plex Reticle Riflescope is filled and purged at least 24 times with high quality, laboratory grade dry nitrogen. Each nitrogen cycle absorbs airborne and residual surface moisture that is evacuated from the scope making it recoil, water and fogproof. This Burris Rifle Sight has been subjected to extreme recoil tests with an impact machine that is used to measure and duplicate the recoil pulse acceleration and duration. The Burris Scout uses lenses with a greater diameter than the competition, to provide you with a sight that throws off incredibly clear images, in almost any situation.