Push button height adjustable in 1" increments Safety locking silencer Replacement rubber tip: 18mm Height adjustable: 30" - 39" Weight capacity: 300lbs This Web Site is not an official U.S. Marine Corps (USMC) site, however, the owner of this Web site is an official trademark licensee of the USMC. To reach the official USMC Web site please go to www.marines.mil