may be used to prevent the mount 70 from moving once secured to the track 10 or fixed position plate 250 for example at least one locking pin release may be a right locking pin release 115 and a left locking pin release 120 the locking pin 110 may be disposed through the mounting plate 80 extending outwardly from the back surface and may be biased e g by a spring resilient material or other biasing means outward towards an extended lock position for engaging the center slot 25 of the track 10 or the corresponding locking pin opening not shown part of the fixed position plate it should be understood that the locking pin 110 may be located on the mount 70 to engage the right slot 30 or the left slot 25 of the track 10 the locking pin 110 may be retracted using either individually or in combination the right locking pin release 115 or the left locking pin release 120 which is operatively connected to the released mechanism not shown it should be understood that both locking pin releases could be oriented in any direction in order to avoid any obstructions yet still allow the release of the mount 70 from the track 10 or the fixed position plate furthermore in some embodiments two or more release levers may need to be actuated in order to release the mounting plate 80 of the mount 70 such an embodiment may provide for additional security by preventing unwanted movement of the mounting plate 80 when one of the locking pin releases 115 or 120 is accidentally.