I have a CMMG MK4 Chambered in 300 blackout. It is a safe princess. It is a 16 inch riffle. I only have less than 50 rounds on it. I have two brand new magpul mags, a metal hand stop, and a holosun 510C. Has a magpul stock. I have a CMMG ambi safety selector I can throw in. Looking for 900, TEXT ME @ 972-391-9972. Cash only and must sign a bill of sale.