The WITHARMOUR BigMuk-BK is a large-format full-tang fixed-blade knife, marketed by the brand as a heavy-duty tool that bridges the gap between a compact machete and a tactical fixed-blade knife. With a total length of 313 mm, a 165.5 mm blade, and a weight of 576 g, it is designed for demanding outdoor use, camping, and heavy-duty cutting tasks.
1095 Carbon Steel Blade
The blade is made of 1095 carbon steel, with a stated hardness of 60–61 HRC. WITHARMOUR specifies a Soldier Grind™, combining Saber Grind and Scandi Grind, with a Direct to Sharp edge. This geometry is designed for a clean cut while maintaining a structure suitable for heavier-duty tasks.
Black titanium stonewashed finish
This BK version features a black titanium stonewashed finish. This treatment gives the blade a dark, utilitarian look, consistent with the model’s tactical positioning.
Black Micarta and red G10 handle
The handle combines black Micarta with red G10, featuring a CNC-machined finish. Its 152 mm length and 30 mm thickness provide a generous grip, well-suited for a heavy, outdoor-oriented knife.
Kydex sheath with accessories
The BigMuk-BK comes with a black Kydex sheath equipped with a Tek-Lock Clipper. The official product description also mentions a paracord lanyard and a T-Punch Sharpener.