Pretty much everybody makes a version nowadays. Ruger and Smith & Wesson make good ones. For that matter, so do DPMS and Bushmaster. You can spend as little or as much as you want, but it’s best to do a little research first, figure out what you really want before spending the money.
My preference is basic, black, functional, with magpul accessories, CMC trigger, Hogue grip, that sort of thing. Your preferences may vary.
"...your preferences may vary..."