Abstract: The application relates to a missile launch rail device including: a missile launch rail and a latch for attaching and releasing a missile situated on the missile launch rail, a latch pin inserted through both two latch pin holes and two rail pin holes positioned approximately halfway between the cam end and the spring end and a pin retainer securely mounted to the missile launch rail, the pin retainer including a latch pin catch which holds the latch pin in place to restrict radial pressure by the pin on inside surfaces of the two latch holes and inside surfaces of the two rail pin holes from pressure created by the missile on the latch, thus substantially preventing premature disabling of the missile launch rail and the latch by wear on the latch holes and the rail pin holes.