UTAC Offset AR Ar15 M4 See-through 1 Inch (1") Riser Mount Picatinny-Weaver Rail
UTAC 1" Extend See-Through Riser Mount1) Extend See-Through Weaver /Picatinny Rail2) Quick-Attach Thumb Nuts3) Fits for all rifles equipped with weaver base4) 14 Slots on Top Rail5) Hard-coat Anodized Finish6) Premium Aircraft Grade 6061 Aluminum