I've got other goodies for the gun that aren't pictured but the upper & fore grip are PLR, all the lowers are straight from K-Ts SU-16 and everything else is AR-15 compatible. As for how it shoots, I can hit trap/skeet clay targets at 100 yards all day long with it. After a 1,000+ rounds I've never had a malfunction and it will fire any 5.56/.223 ammo I put in it. Not including optics, carrying handle and magazines (I have an AR so I used spare & extra stuff from it) the whole gun was $900, which includes the fee for the Class III stamp.
I've looked into getting a Noveske KX3 for it but I have been holding off since I am seriously considering a suppressor and that would cost as much as the gun itself when you add the cost of the class III paperwork. I'm still undecided since it will also mean another six month wait in addition to the cost for a decent suppressor. Actually, if I could find a KX3 at a good price I'd get one anyway.