QD Offset 45 Degree Angled 20mm Mount Base for Sights Weaver Picatinny Rail Scope Mount (45 Degree Offset) Sniper 45 degree offset rail Fits any Picatinny rail / handguard Perfect for mounting tactical accessories Buy 2 to make normal iron sights canted 6061-T6 aluminum 1.77 x 1.69 x 0.43 inches (L x W x H)