Okay my first post, This is my build:
M&P 15 Sport 2 (My first AR)

These are my upgrades.
Furniture:
Magpul MOE SL HandGuard (Carbine Length)
Magpul MOE+ Over Molded Pistol Grip
Magpul MOE SL-K Stock

Optics:
Riton Optics X1 Tactix RRD
Riton Optics X1 Tactix MAG3