Mesa Tactical Anti-Walk Trigger Pin Kit Mossberg Model 500/590 Black. These kits are incompatible with receiver mounted SureShell carriers or side Picatinny rails. Package Contents: Mesa Tactical Rem Trigger Pin Replacement Kit includes necessary hardware What firearm models does the manufacturer say Mesa Tactical Anti-Walk Trigger Pin Kit is compatible with? The manufacturer says that Mesa Tactical Anti-Walk Trigger Pin Kit is compatible with Remington Model 870 Remington Model 1100 Remington Model 11-87Mesa Tactical 92840: Anti-Walk Trigger Pin Kit Mossberg Model 500/590 Black