Evolution Gun Works Leupold DeltaPoint Pro Sight Mount JPoint Redfield Accelerator and Optima Bomar 1.604in Aluminum Matte Black Hardcoat. One of the most prominent features of these Red Dot Sight Mounts by Evolution Gun Works is that they have a progressive taper which is a much easier install than standard dovetail mounts. However you must remove your current rear sight and put on the Evolution Gun Works Leupold Deltapoint Pro Red Dot Mount first. Installation requires some basic tools and knowledge which can be as easy as sliding the mount onto the gun with a little practice. However you must ensure the mount fits your particular weapon or else you will not be able to secure the sight. Thankfully this Evolution Gun Works Leupold Deltapoint Pro Aluminum Sight Mount will still work after the rear pins are removed. You can install this Evolution Gun Works Leupold Deltapoint Pro Red Dot Sight Mount For Bomar all by yourself or with the help of a qualified gunsmith. Modifying your firearm in any way may null and damage the manufacturer's warranty so make sure you keep all the necessary paperwork and manuals from your gunsmith to maintain your firearm in tip-top condition. Specifications for Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For Bomar: Manufacturer: Evolution Gun Works Red Dot Sights-Footprint: Deltapoint Pro Included Accessories: Screws Optic Cut: Not Applicable Fabric/Material: 7075 Aluminum Color: Black Mount Type: Dovetail Fit: Bomar Sight Length: 1.604 in Width: 0.99 in Finish: Matte Black Hard Coat Anodized Gun Make: Springfield Armory STI International Dan Wesson Colt Gun Type: Pistol Features of Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For Bomar: Fit Leupold DeltaPoint Pro JPoint Shield RMS/RMSc/SMS Redfield Accelerator Optima Holosun 407K/507K (the rear pins on the mount must be removed for the Holosun 407K/507K to sit on the mount) Package Contents: Evolution Gun Works Leupold DeltaPoint Pro Sight Mount For Bomar Evolution Gun Works 49419: Leupold DeltaPoint Pro fits JPoint Redfield Accelerator and Optima Mount for Bomar 1.604 in Aluminum Matte Black Hardcoat