Remington parts. I have two magazine extensions that will fit 12 gauge 1100, 11 87 or 870. One is 5 round extension and the other is 3. $55 for the 5 and $45 for the 3. I also have a Choate Combat charging handle that will fit 1100 or 11 87. $15 for it. Last is a flashlight mount by Alpha tech. I'm imagine this would fit a variety of 12 gauge semi auto or pump shotguns and allows the flash light to be mounted under the barrel or beside it. $25. 817 658 9830, North Richland Hills.