This Remington manufactured black synthetic magazine tube plug is for the model 870 Express slide action shotgun in 12 gauge and limits the shooter to only 3 rounds (one in the chamber and two in the magazine tube). This magazine plug is in excellent condition with light wear. (file photo)

Note: Remington model 870 Express slide action shotguns with the following serial numbers have been found with this part:

A Prefix:

B Prefix: B517355M

C Prefix:

W Prefix: