This Remington manufactured safety switch is the early variation prior to the integral safety system found on the later manufactured firearms. This safety switch is for the early model 1100 Magnum semi-auto shotgun in 12 gauge and is in near excellent condition with light wear. (file photo)

Note: Remington model 1100 Magnum semi-auto shotguns with the following date codes and serial numbers have been observed with this part: M855933M

AP (March 1967): 399178M