The MRX BISON | Black Creek Labs
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The ultimate partner for the ranch

range or backcountry.


Bison 4 copy

The MRX Bison

Caliber:¬† 300BLK, 556N, 7.62×39

Action:  MRX Supershort

Barrel:  12.5 inches

Length:  Collapsed: 28.5 inches

Weight:  6.9 lbs

Accuracy:  1.5 MOA

Accessory Mounting:  Picatinny, M-LOK

Sights:  Not Included

Mag:  Magpul PMAG or similar

Muzzle:  2 gilled brake.

CDN Classification:  Non-Restricted

Color:  Grey, Tan, Green, Black

The MRX Bison is a compact, light and rugged bolt action rifle that is chambered in 300 Blackout and is fed with AR15 magazines. ¬†Caliber options also include 5.56N and 7.62×39. ¬†This rifle would be comfortable in its scabbard on the side of a horse, ¬†packed, slung or mounted onto a Utility Vehicle for ranch, range or backcountry duty. ¬†The vertical pistol grip and adjustable stock allows for the rifle to be shot comfortably in any position and the magazine will continue to feed up to 30 rounds of 300 Blackout, 5,56 NATO or 7.62 x 39, (based on legal magazine capacity in your area).


Machined from aircraft grade aluminum. Finished with Type III hard coat anodize and Cerakote. ¬†The chassis comes with side and under rail MLOK mounting points and an integral “one point” QD sling point on the opposite side of the bolt.


MRX Supershort with three lug bolt offering a 60 degree bolt throw.


12.5 inch Match Grade Steel Barrel finished with Nitride and Cerakote


Triggertech Remington 700 Primary Trigger