I'm also trying to build one on a budget. have a TM lower and I keep looking at the Blackthorne kits due to their prices but I really worry because of their earlier reputation. I like most of the 16" kit they have except that Sportical style upper. I don't care about a forward bolt assist on a .308 but I do think I want a dust cover.
Gunco member #11
“it is dangerous to be right in matters about which the established authorities are wrong” Voltaire