This Kensight Bo-Mar Rear Sight is Fully Adjustable for both windage and elevation, and is an excellent upgrade for any 1911 or other pistol that is equipped with a Bo-Mar BMCS style rear sight dovetail. The rear sight body is Wire-EDM machined from 4140 Chrome Moly Steel that is then heat treated to a hardness of RC 38-40, ensuring tight part-to-part fit and long-lasting durability. Click-adjustments are positive and precise, allowing for reliable and consistent point of impact changes. This Bo-Mar Rear Sight is equipped with a Rounded "Combat" Blade profile that is ideal for use on a duty or concealed carry pistol since it significantly reduces the potential for snagging during the draw stroke. The Fully Serrated Rear Sight Face reduces glare and presents a clean, uncluttered sight picture that helps a shooter to quickly acquire and maintain focus on the front sight post. Notes:Blade Notch Dimensions: 0.135" Wide x 0.100" Deep Sight Body Dimensions: 1.407"...