This Harris Sling Swivel Mount Bipod adds extra support for maximum field accuracy. Spring-loaded telescoping legs give you the exact height you need. Folds parallel to barrel for when its time to move out. Mounts to QD sling swivel studs Adds weight and steadies your aim Spring-loaded telescoping legs Height-adjustment notches Legs fold parallel to barrel for transport Buffer springs and adjustable tension on hinged base eliminate tremor 6-9" height adjustment