Madhouse Design’s Retention Systemallows you to mount a single pistol or multiple pistols in an efficient and organized manner. The mount pin is 303 stainless steel with a soft rubber over-mold to protect your gear. The system includes a 9mm pin with a certificate for a free pin of your choosing. The swivel body locks in 7 positions at 30° increments or can be locked out and free float for easy access. The mounting rails are 6061 aluminum and have a Mil-Spec picatinny profile providing a extremely secure mount.