UTAC AR Ar15 M4 Flat Top Compact 1/2 Inch Riser Mount Picatinny-Weaver Rail
1) 8 Slots Compact See-Through Weaver /Picatinny Rail2) 1/2" Low Profile3) Quick-Attach Thumb Nuts4) Fits AR15/ M16 /FALs Flat Tops5) Hard-coat Anodized Finish6) Premium Aircraft Grade 6061 Aluminum