I donno, I guess I just got lucky. All I bought was a side saddle (~$20?) and they not only cut it for me but I went back the next day and had them intall it onto the slide part since I didn't have the tool to remove the old one.Right; pay them fifty bucks to MAYBE do it right...
I ordered it direct from Remington.
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Be aware that you need a special tool to separate the fore-end from the action bar.