Converts Dovetail rail to Picatinny rail. Mounts to any Dovetail rails from width 9mm to 15mm including 3/8". Provides 3. 94" length single Picatinny rail (7/8" / 21mm. Slots: 9 (Picatinny) Material: 6061-T6 aluminum alloy Reversible side plate with 3 locking screws for secure fit. Each end of side plate has a different angle so adapter can cover full range of Dovetail base 9mm - 15mm. Included: Dovetail to Picatinny adapter. stop pin, screws and hex wrench. Genuine product comes in a Sniper retail box