This Remington manufactured chrome finished breech bolt assembly is for the model 870 Wingmaster slide action shotgun in 12 gauge and is in very good condition with light wear. The breech bolt assembly consists of the firing pin assembly, extractor assembly and the locking block.  (file photo)

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

12 Gauge 2 3/4": S051509V & T924532V

12 Gauge 3": T066517M