How is the underfolder?  Does it lock up tight, or is it sloppy?  Last, are there any rail options, other than drilling through the top cover?  Like an Ultimak or something similar?  Thanks for any responses.

Joe

I personally think drilling for the Nodak or Stormwerkz rail is the way to go. I don't know why people don't like that, so what if you have holes in your top cover? You can always put rivets or screws through them or weld it shut or do nothing. If you want to avoid that then you can get a gas tube rail (Ultimak), rail on the side of the receiver and "float" the scope over the top cover, or get the railed handguards like the US Palm/MI set up.