Go buy a 16" SR-15
or
Get a Colt SBR and buy a Geissele/Colt exact clone 14.5" URGI upper from Geissele’s website.
I’ll go against the grain here.
It’ll probably run, but might not be optimal in some ways, already mentioned. Some of the parts solve problems that don’t exist.
Shoot it, enjoy it, wear it out. Learn from the experience, and report back when stuff breaks or you have problems, so learning can occur.
Get a known reliable gun as a backup if you don’t already have one, and don’t tinker with it.
I came across my pic of my NiB bolt in a Chrome Carrier the other night. NiB sucks for firearms applications. Maybe it’s good for some other realm. The bolt looks like phosphate compared to the carrier because NiB grabs and clings to carbon fouling like crazy.
I may post that pic if I think of it when I’m home.
I still have the microscope pics and can post them if there is interest.
Hexanes, toluene, and hot caustic (hours each in ultrasonic) did not remove the carbon.
Acid did not degrade the coating, but nitric started disolving the steel from the inside (through the cracks).
Disolving the Ni was the only way to get it silver again.
You need to put this POS up for sale on one of those hillbilly gun trader pages on face book and use the money you recoup (if any) to buy a Colt 6920.
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+1, or BCM, LMT, Noveske, Rainier Arms Mountain Upper, or Centurion Arms.
If you’re on a budget? At this point you’d be a much better off with Aero, Stag Arms, or even Palmetto (yes I said it).
OP, I’m sorry to break it to you. Your Brownell’s barrel might be fine, but all other components are a dumpster fire put together which really do nothing for you or anyone on the market.
Here is a good reference video to watch only 2min, but well worth it: https://www.youtube.com/watch?v=pVXOj9Uc5pg
P.S.: don’t feel bad. I also went through this stage and still have some aftermarket components (some run fine, most ended up in the trash) - I only regret wasted money and time, not the experience of playing with them.
Where the hell were all you guys back when I was getting beat up for my “I don’t like adjustable gas blocks because they introduce another point of failure.” discussion?? 
Geesh!!!
OP - there is nothing wrong with a standard FA BCG in phosphate. It’s not like you have to clean it after every shooting session, or every other or… etc etc… My personal go-to is LMT FA BCG, but Colt, BCM and Toolcraft all make reliable, proven BCG’s.
Since you are new to M4C, (post count wise) I will give you some advice. When you ask to have a build critiqued or even a concept/idea critiqued, you’d better be have your big boy pants on because you will get straight answers from some people who care more about your weapon functioning correctly and reliability than they do your feelings. And they know what they are talking about .
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This is a good video. This should be in our “New to AR’s” section. Jerry really hits on some good points.
You know it really is a shame that guys don’t come here before they build or buy and spend 3 months educating themselves and then asking questions before they put an AR together or buy one. I don’t automatically default to the “buy a 6920” message, BCM or even LMT. I believe with the right guidance that a first time AR owner can build a reliable, accurate rifle. I’ve never bought a complete AR, I did buy a complete upper once though (LMT MWS). My point is with a mentor to help the person avoid the hairless novelties a solid weapon can be built. Thanks for posting up the vid of Jerry.
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Mark,
I did reply to you and Nocalsocal’s comments. Link below:
nevermind
Never ask for advice on a forum.
Seriously? I hope you’re kidding. If not, that’s probably the worst non-technical advice that’s been given here in some time.
The Beginning of M4C
In 2006, the founding members of M4C recognized that the AR community had only one online forum option. They hoped to create a new venue that focused on improving the quality of information that was being shared online at that time. The shooting industry agreed: before the idea even went live, 13 manufacturers and dealers had pre-paid to advertise on it. The result was a heavily AR technical forum catering to professionals while maintaining a civilian-friendly feel.
They asked the members to state facts based on first hand experience or reliable second hand information. Known professionals in the industry were given identifying labels so that their information would always be taken with the utmost regard.
Point to all that above? If there is a forum where you’re going to ask questions to expand your knowledge - then M4C is that forum. That hasn’t changed. Only thing that may have changed is our demographics. Maybe there are more civilians today than in years past. Maybe there are fewer military/veterans - fewer LEO/LEO’ veterans than before. Maybe we have more snowflake type people who get butthurt when they ask for a critique on a weapon and actually get one… I’m not privy to our numbers. But we’ve done well to stay true to our purpose.
Dead serious.
Fixed it for you.
This I can agree with.
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If all you want are a bunch of cheer leaders clapping for your poor gear choices, go find another forum.
No. Just buy a 6920 OP. If you want something really nice buy a KAC.
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