Looking to sell my 300 blackout. Just too expensive for me to shoot anymore. I have a BCM 9" upper. It is keymod, but you can slide a BCM M-lok rail on if you want. Very few rounds shot. Maybe 100. 

I have 610 rds of sub sonic and 440 rds of super. 17 mags, Lancer and Magpul. Designed for 300 rds. Optic and vertical grip not included unless you want it it will be extra. This is a great package to get you started in the 300 game. Awesome suppressed round.