The front action screw is made of strong steel with matte blued finishing and is a factory original Mossberg component. Designed for the Patriot, MVP 5.56 Action, 4X4, & 100 ATR rifle models from Mossberg, this screw secures the front portion of the action to the stock of the firearm. This screw is ideal for replacing your worn / missing component or to keep one as a backup in the spares chest. Mossberg small parts are made to the same high material and workmanship standard that you have come to expect and trust from Mossberg for your firearm.