I'm going to build my first AR Pistol, picked these parts based on quality/availability, any thoughts?
Upper
7” DPMS Kitty Kat Barrel / Receiver
7.6” Troy TRX Extreme Rail
RRA BCG
RRA Charging Handle
Lower
RRA Pistol Lower w/ Buffer Tube
ERGO FDE Grip
Magpul Ambi Sling Attachment...