The Leupold Mark 2 IMS Rings Rail Mount 110290, 110291 makes attaching your favorite scopes to your AR rifle easier than ever. Strong and reliable, this Riflescope Mount from Leupold offers ideal scope height and eye relief, plus an extremely rugged and durable construction quality that ensures a perfect shot for years to come. Using two Torx T-15 screws, the Leupold Mark 2 Rail Mount for Rifle Scopes attaches the living hinge to the rifle for an easy installation and a simple solution compared to risers. The Leupold Mark 2 IMS AR Rings Rail Mount allows you to have your rifle scope in the perfect location to maximize accuracy and performance. Featuring the Leupold Integral Mounting Systems ( IMS ), this riflescope ring mount raises the scope and pushes it forward, allowing it to accommodate an array of different scopes. Leupold Mark 2 Ring Rail Mount models come with the Leupold Full Lifetime Guarantee and are field tested for durability and strength. The quick-release function allows for fast removal of the Leupold Mark 2 IMS Picatinny Rings Rail Mount so you can easily customize your favorite weapon time and time again.