The Condition One Micro Sight Mount allows the user to pair a Red Dot Sight with the C1 J-Arm giving the end user several different micro and macro adjustment points. For Micro adjustment points"" the C1 Aimpoint MSM has 4 different locations for a shooter to choose from on the plate itself (front/mid-front or rear/mid-rear) and for Macro adjustments the C1 Modular Mount has 4 accessory ports left"" right"" fore and aft. This gives the user of the C1 MSM Aimpoint 16 total positions to best suit their specific setup or application. Made From 6061-T6 aluminum Type III Hardcoat Anodized Tan. Weight .8oz.