Extends from 13 1/2" to 27" Swivels (tilts), Rotates, quick detachable, "S" lock factory installed. The RBA-1 adapter allows it to rotate (right-left) and is quick detachable. Includes the "S" lock to add leverage to the swivel mechanism. All three assembled at the factory. This bipod was put on the rifle & never used. Please email with any questions. This is for sale else where, so if interested, let me know & I'll take the listing down from the other site. Asking $140 plus $15 shipping.