Questions on AR build

OK…I am putting together a new AR build and here is what I have so far:

Lower:
Stripped S&W Lower
LPK - I was thinking of getting a Stag LPK. If anyone has any suggestions to the contrary let me know.
G&R Tactical 6-Pos Receiver Extension
G&R Tactical Castle Nut
ST-T2 Heavy Buffer - Spikes Tactical
LMT Receiver Plate
CS Buffer Spring - unless someone can show me otherwise
Magpul MOE Rear Grip
Magpul MOE Stock
Magpul Enhanced Trigger Guard

Upper:

BCM 16" Mid-Length Upper
Mid-Length Handguards
BCM M16 BCG
BCM MOD 4 Charging Handle
A2 Flash Suppressor
Troy BUIS

Any suggestions on changes?

Thanks for input.

LPK - G&R Tactical (if it’s in stock) It’s what I have in my 6.8 AR.

That was my first thought as well, but it seems like they don’t sell the LPK separately (or they have none in stock). It would be convenient since I will be ordering the Upper from G&R.

G&R offer both chrome silicon and stainless steel buffer springs. Supposedly, the CS springs are better, but I have used both with no drama.

It looks like a quality build!!!

IIRC Grant assembles these LPKs from what he considers the best parts, so the LPK goes in and out of stock with parts availability. He had some in stock a week or so ago.

https://www.m4carbine.net/showpost.php?p=618343&postcount=28