Palmetto State Armory has their premium Ar-15 carbine kits on a Fathers Day sale for $459 and free shipping. I thought about one of these and a Spikes blem lower and I would be around 530 bucks total. I know you can get a complete Colt 6920 for about $780 and I know the PSA and PTAC parts are not as good as Colt quality but how about their PREMIUM kits? Are they pretty close to Colt quality?