I am a 23 year veteran so I know ar platform pretty
damn good. With this clown of a president in off and China bs I have decided that my pistols are not enough to make feel semi safe. So I decided to build me a ar and this rifle will be used for home defense and get to the woods gun. I have been doing some research to figure out what I am going to build. Since I'm new to the ar game I  need all the help and advice you can give me. What I have decided I'm going to build a 13.9 or 14.5 depending on what muzzle device I go with. My build list as of now
Radian builder kit
Criterion barrel
Geissele trigger
Aero enhanced buffer tube
Damage industries enhanced recoil spring
B5 systems 23 p grip
B5 systems sopmob stock
Forward control design castle nut
Forward control design buffer retainer pin
Iwc qd end plate
I still need help with a good gas block fixed or adj. A good bcg and what buffer i need to look at and any other parts that I missing from the list. So please if you have any suggestions I need to look at. My goal is building a ar that I can trust my life on and not think twice about it. The ammo I'm going to be running is the black hills 77gr otm my main load 600 or 800 rounds and a cash of couple 1000? of some cheaper rounds not if shtf but when it hits. Thanks for reading

87 is one, one is none  
welcome to the sickness

Welcome aboard.  Got any Legos?

https://www.ar15.com/forums/General/Hall-Of-Heroes/77/

Adjustable gas blocks allow you to run much lighter buffer weights than H2s, making the rifle lighter and lowering the recoil impulse, helping you to get back on target quicker.

My worst case condition is generally getting a flat tire enroute to the range.  

Thanks for the response. I think I'm going with the the Ripcord industries gass hole gas block with was designed for the criterion barrel and it's made from steel

Have you considered reloading? That would make that 77 gr ammo a lot more affordable. It is fun and easy.

I am not sure how I feel about the enhanced buffer tubes. The U-notch bothers me. I don't want the buffer tube torquing the buffer retainer by accident during assembly or putting any lateral pressure on it after assembly. Watch out for that if you do use it.

I think the other elements of your build are good. If you're mounting the barrel use a Midwest URR.

Thanks for the advice

Kinda seems like you browsed the forum and picked out whatever gucci crap was drooled over last month with no real thought to purpose. Im sure itll be a fine gun if assembled correctly. Im also sure it wont be any better than a colt that costs far less.

He's chosen a top notch trigger and bbl, I'd like to see yer Colt outshoot it.

Vltor charging handle with medium latch

If using an adjustable gas block, I can say I definitely prefer detent based gas blocks over set screw based.

I have a couple of Aero adjustable gas blocks, they’ve been great, but I don’t have tons of rounds down range on them.

If you wasn't in a ar fourm I would think you was crying ass libtard that got your panties in a wad. So keep your sorry ass comments to yourself.

I don't think you know how the interwebz work.

Another noob that hasn't learned how to use the Quote button yet, give him a few posts.

OP, there is quite a cult of Colt, and you did post this in Tech, so be careful how you reply to such things.  Non- technical comments fly in GD, but not here.