900.00 Black Creek Labs MRX Bison 5.56/.223 12.5" - unfired Medicine Hat May 8, 2024 - 4:41 PM barkhad36 BCL MRX Bison 5.56 NATO 12.5" barrel bolt action rifle. Unfired. Never found the time to take it out and use it, so it might as well go. Compatible with AR-15 magazines. Comes with 3x 20 round Black Creek Labs magazines.