I am looking for some advice on a my first build a friend is helping me with.  I ordered a lower from PSA it is a PSA blem lower with a magpul MOE stock, grip, trigger guard.  I was looking at a RRA stripped A4 upper.  I have a read a bunch of posts about building just trying to get a list of parts I will need and advice on stuff to avoid or mistakes I could make when buying individual parts.  I spent 169 plus shipping on the lower.  I was looking for parts that were a little better than say a stock M&P rifle.  I also didn't want the A2 post sight on the barrel, I just prefer the flat look.  Here is what I think I may need:

BCG, was looking at a nickel boron possibly from PSA

Charging handle, BCM gunfighter ambi or Rainer arms raptor

Barrell, 14.5 inch, not sure what to get due to compliance work needed with the muzzle brake

Troy industries claymore muzzle brake

Free float hand guard that will cover most of the barrel 

 

Am I leaving anything out?  Thanks for the help or whatever advice you can offer.

 

Troy VTAC rail. You can go 13 inch and it will look nice.

I know Troy is on the shit list but if you want a nice rail go to the bushmaster site in the clearance area you can get a free float rail for under a hundred. I just picked up 2 carbine rails for 89 bucks a pop. They usually run a buck fifty each. They also have the folding front and rear sights for 69 bucks each..

Adco has daniel defense midlength 14.5 barrels for sale