Quoted:
First post here

I've decided I would like to try and build an ar15 that will be mostly for fun but that will work for hunting and self defense if needed. I haven't done anything with an ar except own a couple and shoot them as much as I can so assume I know nothing about them. - Short 300BLK rifles are a blast. You still get decent velocity with supers even with a shorter barrel, so some people really enjoy hunting with them. IMO, for self defense in the home, I would recommend a shotgun first, and a handgun caliber second. Unless you're hand loading, I don't like the potential of overpenetration with supers and the lack of expansion with subs.

I'm thinking of a 300blk with a 9" barrel that can take subs and supers with and without a suppressor. Here is what I've come up so far, don't hesitate to criticize, that is after all why I joined here and am posting. The end goal is hands down reliability, looks and to a point accuracy are a not close at all second.

Ballistic Advantage 9" barrel with front sight gas block - This is a preference, but I would skip the Front Sight in favor of a low profile gas block. You will have more rail options that way, and the BUIS options are extensive now.
Aero Precision stripped upper and lower - They make good products. Only reason to change would be if you wanted something specific engraved/style from a certain manufacturer.
RRA single stage trigger - If the purpose of the build is fun, hunting, and self defense, I'd stick to GI FCG for the KISS principle. It will work when you need it to.
Daniel Defense chrome plated bcg - Best coatings for BCG are Nickel Teflon and Nickel Boron. I wouldn't pay extra unless it met one of those standards.
Phase 5 buffer tube with components - Good starting point. If you ever do apply for a can and an SBR, you can shoot it with the pistol tube while you wait.
YHM Key mod 4.25 handguards - I'd go for a rail system for modularity and style over old style handguards. But that is a style decision. Are you ever going to run accessories?
Flaming pig muzzle break - Noveske makes good stuff, and that will fit under most rails.
BCM carry handle sight - Again, style choice, but i prefer the options a flattop offers me for optics, BUIS, and accessories.

Please recommend anything you'd do otherwise. No plan for a sbr, if I want to visit my sister in Oklahoma I don't plan on telling the ATF. - All that is required for interstate travel is a form submitted once a year for a 364 day time period. Its a 300BLK, trust me, it will call to you to suppress and SBR it.

Thanks, Drew

Edit to add: recommend a sling/attachment? - LWRC makes a dual QD end plate that I like. I think Magpul makes a single QD one. Both would work for single point slings. If you want one up front, I'd use a rail mounted QD point.