I was at the local shop and ended up paying off the rest of my layaway for my Tactical Solutions SB-X AR15 22 upper. I have a friend who was going prairie dog shooting and needed a .22 rifle with a scope. I let him take this upper with my scope on it on top of my 6.5 grendel AR lower. He said it worked great, was accurate, and performed with 100% reliability. Plus, it had a suppressor on the end and was super quiet. The SB-X upper has a shorter barrel with a pinned suppressor shroud to maintain rifle status (not sbr) while giving you a total overall shorter length when using a suppressor. This is what it looks like with that configuration.