take your pick...there isn't a shortage of 5.56 stuff, the 6.8 is a bit harder to come by, for good reasons...Bolt parts/BCG's

plenty of 300 parts being sold on forums lately. try there

 

I hope its a shooter. Its hard rounding up parts since everything is sold out right now it seems unless youre Jared who can find anything

I really like the Mega receivers and the ambi safety so Im going to go with them. Just got to find a place that has them both in stock. I hate to buy a lower separate since you can buy them as a pair that will fit perfectly together. Havent read how they fit together if you dont buy a pair.

Need to do some reading too on what stock to go with. I want something with a little better quality than the magpul MOE stock Ive got on my other rifle.

 

try here
Search Results - Oklahoma Shooters

 

All of them except the JP bolts arent available. Gotta head out to dinner but Ill do some more checking and do some reading on the merits of NB coating.

I guess push comes to shove I could run a Mega lower with Vltor MUR upper and a BCM CH.

 

I like my magpul UBR, but may be a bit too heavy for your build. It's a bit heavy, I have to admit.

I also like the ACE skeleton, or sopmod

I'm somehow good at finding these parts. There was a thread on 68forums about bcg's, I went and found like 5 online vendors for what the OP was wanting.

 

NB is supposedly easier to clean

here, this guys is a veteran, and a member on 68forums, I ordered my stuff from him since he took the time out to chat with me over some questions:
Build Components

he can find what you need. WMD has a NB that was in stock for $190

 

BCM in stock
BCM Bolt Carrier Group MPI Auto M16

 

This thing is going to be heavy anyway with the suppressor, im not lugging this thing through the woods stalking stuff. Just a fun toy, and a bench gun. Itll make it out to the deer stand but thats about it.
So who makes top quality BCGs? Im finding lots of brands Ive never heard of in my searches.
WMD NiB-X Bolt Carrier Group
LMT Full-Auto Bolt Carrier Assembly (Complete)
The JP bolts here
Bolt parts/BCG's
Spikes that looks ot be in stock
Spikes Tactical Nickel Boron HPT/MPI M16 BCG (5.56)

 

Is that what you would go with given what Im wanting to do?

 

yes, actually I almost bought that one, until I decided to hold out for my barrel and bolt from ARP. I am doing the YM carrier and the ARP bolt to match the ARP .223 Wylde Socom barrel