Try look at some of these
https://outdoorsportsusa.com/AR-KITS/AR-CARBINE-KITS/AR-15-STANDARD-CARBINE-KIT-OPTIONAL-ACCESSORIES
https://outdoorsportsusa.com/AR-KITS/AR-Pistol-Kits/AR-15-RIGHTEOUS-PISTOL-KIT
They are running Black Friday Specials right now so there is free assembly and test fire and other bits. For an additional $45 - 100 you can get a lower from your local shop and be into a new rig in an hour or so.
Cheers,
Craig6