Hey guys, I'm asking for a little help here on this one. I took off the the handguard and im installing a freefloat handgaurd. However it was a little hard to do then I had expected. i was wondering if any of you guys on here have a vice and a ar-15 clamp so I can get the barrel nut on all the way. I also didn't know that i needed a headspace gauge aswell. If any of you guys could help out that would be great!