No, the Rock Island Armory (RIA) Pump Action 12 Gauge shotgun is not designed to accept a bayonet. The design and features of the firearm determine bayonet attachment capability. Shotguns that are typically compatible with bayonets have specific attachment points or lugs on the barrel or magazine tube to accommodate the bayonet's mounting mechanism. However, the RIA Pump Action 12 Gauge shotgun does not have such provisions or accessories from the manufacturer.