Quote Originally Posted by HoneyBadger View Post
Hard to beat... so you're saying you like the QC-10 better? Can you slap any 9mm upper on the QC-10 lower?
In terms of aesthetics, yes, hard to beat. Functionality, there really isn’t a difference. Any 9mm upper will bolt onto it. I believe Quarter Circle is out of business though so finding one of their lowers may be difficult.