Manufacturer: Aimpoint 12198
The Aimpoint LRP base is what you need for your red dot sight. This base allows you to attach the sight to your M4 and take it off quickly and effectively. This base has a matte black finish.
Specifications and Features:
Weight: 0.25 pounds
Dimensional Weight: 0.12 pounds
Dimensions: 3" (W) x 2.25" (H) x 3" (D)