This is a Magpul Industries Accessory known as the Butt Pad Adapter, model MAG318-BLK.
The Hunter/SGA OEM Butt-Pad Adapter allows the user to replace the factory recoil pad on Magpul SGA Remington or Mossberg Shotgun Stocks as well as the Hunter 700 Stock with a Remington 870 synthetic-pattern butt-pad of their choice (not included). By utilizing the original spacers" this adapter retains all the functionality of the Hunter and SGA Stocks while providing for additional butt-pad options.
Features:
Will only accept aftermarket recoil pads that are designed for Remington 870 12ga synthetic stocks, will not accept pads designed for wooden stocks.
