Black Creek Labs MRX 5.56 20 Round Bolt Action Magazine
Black Creek Labs “The MRX MAG” gives the MRX Bison user a 20 round capacity in a magazine that is specficially designed for the MRX
Supershort Action and will not fit or function in an AR15 or any other semi-auto
rifle.
The MRX MAG is a double stacked, straight magazine made from a proprietary
blend of polymer. The MRX MAG has extended length feed lips and a no-tilt
follower design that allows ultra smooth and reliable feeding. The MRX MAG uses
“follower stop ledges” which keeps the follower from topping out, which allows the
MRX Supershort bolt to be manually pushed forward when the magazine is empty
and still in the rifle, which is not possible with an AR15 magazine.
Compatible with BCL MRX Bronco & Bison rifles chambered in in 5.56/223 & 300 AAC Blackout