It passes their legal ruling. Also can be converted to fill g28 specs if you purchase the standard g28 gas block. Which won't be cheap but theres a few floating around
If it's OTB capable and has a steel receiver I'm in, most likely the closest will ever get to HK military rifles.
Check again before you give bad info out. I've got two on here for sale. Both are Restricted.
Restricted on barrel lenght just like any other semi auto. There are non restricted barrels for the USC.
The only rifle that can be restricted based on the type is the AR-15. The rest are either non restricted, restricted on barrel lenght or prohibited.