<b>Specification:</b><br> ★The item is packed with 2 parts, one is holding ring, another is rail mount.<br> ●Before using，Put the holding ring onto the rail mount with each two holes matched together, keep the small triangle on the holding ring forward.<br> ●Put two screws from the holding ring into the rail mount, and then fasten them with the Allen key.<br> ★This item is usually mounted on the scope or rifle. <br> ●Scope: scope ring adaptor should be with Picatinny/Weaver/Universal Rail. <br> ●Rifle: rifle should be with rail base<br> ★When you add this gear to hold flashlight or laser illuminator, you can also perform with laser sight or gun light. Multi combination, easy mounting, big adjustment angel, reliable performance<br><br> <b>Fitting Guide:</b><br> Compatible with following Firearms: Tactical Rifles, Hunting Guns, it comes with a mount for a Picatinny rail system, also known as a MIL-STD-1913 rail and Weaver rail system.<br> <b>Additional notes:</b><br> ★which has an accessory rail mounted<br> ★Compatible with Picatinny and Weaver rail<br> You should certain your rifle hand guards with accessory before purchase. <br>