Have Remington gamemaster model760 serial number 367263 letters on the left side of the barrel are L E X and alittle up to the right is an X?

The letters "L E X" and the additional "X" near the serial number on your Remington Gamemaster Model 760 may indicate specific manufacturing codes or inspection marks used by Remington during production. These markings can provide insights into the production year or other manufacturing details. For a definitive interpretation, consulting Remington's records or a firearms expert could provide more clarity on their significance.