Aero Complete Upper Suggestions? For Featureless.

[naz]

Don't equate retail price with cost. adds to retail price even though mfg cost may not be that much more. L.

Do you know how much it costs, or an inexpensive place to get the coating done?

It seems like UCT coating is the only one still taking retail orders.

I want to experiment with an upper and bcg coated in NP3

[StandardFinn]

Do you know how much it costs, or an inexpensive place to get the coating done?

It seems like UCT coating is the only one still taking retail orders.

I want to experiment with an upper and bcg coated in NP3

Robar is like the staple NP3 coating company in the states - that being said, a 1-off is probably going to cost you a premium.

[NorCalRefuge]

Not a fan of the poor Nib coating put on many BCGs. Nib can change the dimensions of a BCG if its not carefully done and checked. Many people have had good success however.

The advantage of phosphate is that it holds oil or grease better. I'm experimenting with a Nitride BCG and barrel in one of my rifles, its OK, but the phosphate holds lubricants better. I would not suggest a nitride barrel if you are going for high round counts.

Its important to keep ARs WELL lubed. They can run with very dirty BCGs as long as you keep them lubed. They can be covered with carbon as long as you keep the BCG wet, it will run.

Nitride is easier to clean, but seems to throws off the lube more readily.

Either will work, but you'll notice that even high end old school companies continue to predominantly supply phosphate.

I use phosphate BCGs from Colt, BCM, LMT, Daniel Defense, almost exclusively. And my spare BCGs and bolts are BCM, Daniel Defence, and LMT. I've got a couple extra Geissele bolts I bought a while back, but I think they are phosphate too.

Also, check to make sure the bolt is C158 and not 9310. Evidence is starting to come in that 9310 might be inferior.

The throwing off of oil doesn't really concern me either. Machines don't require massive pools of oil on all surfaces... just enough to fill the nanometer gaps between surfaces is sufficient to keep a molecular barrier between metal on metal. This is part of the reason people say a nitride BCG requires less oil to run efficiently.

It's kind of an "old school" philosophy (predicated on using porous/abrasive phosphate BCG's) to drench it in oil.

But again, use whatever you want, it's your rifle. Even if you choose a BCG from a reputable manufacturer based solely on the color of the coating (to match some build you're after)... so be it, there are worse things.

[naz]

Robar is like the staple NP3 coating company in the states - that being said, a 1-off is probably going to cost you a premium.

As far as I can tell, Robar closed and Wright armory bought the NP3 tech/rights.

Their cost for a consumer is quite high for NP3 coating. For nib, icy cost quite high too

kCheung was alluding to the cost being minimal, so I was hoping he could unlock some contacts that provide the service

[SteelPastor]

A side question to my earlier build question: Are blast forwarding devices legal in California on either featureless or maglock builds?
Thank you.

[xmaxonx]

Yes they are fine, for now. I was thinking about picking up a linear comp myself.

[NorCalRefuge]

There was a big thread recently where people basically concluded a linear comp for a HD/SD situation isn't a great idea. It'll do basically zero for sound levels inside a home where the sound will reverberate off all the walls.

Unless you just want one for the look, or for funsies... not much of a point.

[SteelPastor]

There was a big thread recently where people basically concluded a linear comp for a HD/SD situation isn't a great idea. It'll do basically zero for sound levels inside a home where the sound will reverberate off all the walls.

Unless you just want one for the look, or for funsies... not much of a point.

I am also considering one just for range purposes... just to have a bit less noise when others are beside me. I've never tried one.

[naz]

I am also considering one just for range purposes... just to have a bit less noise when others are beside me. I've never tried one.