Attaches to any standard 20mm Picatinny rails. 180 degrees of leg angle adjustment and the swivel tension lever. Extendable legs height adjustment from 6.6″ to 10″ Easy to follow live moving targets with a 15 left and right adjustable cant Carbon Fiber Legs for enhanced stability, non-slip rubber feet, Secure leg-stops protect overextending Durable more robust design intended for calibers of .300 and larger.