I put a washer on the bar and it has worked perfect ever since. Stays shut until the bolt is cycled everytime... 3000+ rounds through it and still holding. Uploaded with ImageShack.us Uploaded with ImageShack.us Uploaded with ImageShack.us
Yes, You should be able to use any RIS that fits an AR. I recently installed a FireField quad rail I picked up from cheaper than dirt for $30 and its rock solid.