The 5401-Blue uses CPM-MagnaCut heat-treated to 60-63 HRC. MagnaCut was developed by Crucible Industries to deliver M390-level edge retention and wear resistance while achieving corrosion resistance that rivals steels built specifically for that purpose. In a flat ground reverse tanto at 0.125 inches thick with a stonewash finish, it is a strong-performing blade at a price point where most production knives carry less capable steel.

The 5401-Blue shares the same CPM-MagnaCut reverse tanto blade, flat grind, stonewash finish, overall dimensions, and 2.99 oz weight as the 5401-FDE. The only difference is handle color — blue anodized versus FDE anodized on the same smooth 6061-T6 aluminum frame. Both use the standard flat grind rather than the high flat grind found on the 7075 aluminum 5403 and 5405 variants. If you prefer the standard Malibu flat grind geometry and want a blue colorway, the 5401-Blue is the configuration.

A reverse tanto blade has a primary flat cutting edge along the bottom and a secondary angled edge along the spine that sweeps up and forward to meet it, creating a strong angular tip. The geometry produces a long, usable flat cutting section for everyday slicing tasks and a reinforced tip with significant point strength for precision entry and detail work. The flat grind on the 5401-Blue produces a clean, consistent edge across the full 3.25-inch length.

No. The Malibu 5401-Blue is a manual flipper — it deploys via a flipper tab on the blade spine with no spring or coil mechanism. It is legal in all US jurisdictions where folding knives are permitted and in most international destinations where automatic knives would be prohibited. No compliance form is required at checkout. The button lock provides the same positive lockup found on Pro-Tech's automatic lineup.

The Malibu uses Pro-Tech's tuned button lock with no separate detent ball. In the closed position the detent system holds the blade shut through a tuned tension fit. When open, the button lock engages the blade tang directly — press the button to release the lock and close the blade manually. The elimination of a separate detent ball simplifies the mechanism and delivers consistent deployment feel across the knife's service life.

The Malibu 5401-Blue measures 7.50 inches overall when open with a 3.25-inch blade at 0.125 inches thick. Closed length is 4.25 inches and handle thickness is 0.48 inches. It weighs 2.99 oz. The tip-up right-hand clip is included for pocket carry.