Picked up this Spikes upper and lower as well as this 15" Matrix Aerospace rail. The upper, lower and rail are cerakoted "sniper" grey and actually looks cool. A company in Jacksonville, FL did the cerakoating and did a great job. For the lower I have a Colt LPK going in as well as an A2 butt stock. As far as the barrel I haven't made up my mind. Probably a 16" mid length but I haven't made up my mind yet. Not sure if this one will be scoped or just have iron sights. We will see.