I have been doing business with Dan at Angola Armory for parts I have needed. I have been ordering for several years from his auction sites, and now direct. Lately, I have needed several items and all of them have been in excellent condition, resonable prices and fast shipping. My latest buys are WWII marked MG42 Barrel Carriers, MG42 Bolt, Recoil Buffer assembly, Front Barrel Buffer assembly (.308), and .308 Feed Tray.
Everything I received was in excellent condition and exactly what I asked for. Dan is also very pleasant to talk with too. Take a look at his website, and if you need his parts, give him a call, or shoot him an e-mail (he does answer them too). An excellent Vendor with great parts.
Website link if you don't have it: http://www.angolaarmory.com/