300 Blackout AR-15 built locally by Sigwo Arms. 16in barrell with Carbine gas system.  Lantac Dragon muzzle brake and Hawke x4 red dot. Has about 100 rounds thru it to sight in. Got it to hog hunt, be never went. It will not shoot sub sonics. It is designed for hunting rounds. Text is best 417 seven 6 six 6  88 nine