CPM MagnaCut already delivers M390-level edge retention and top-tier corrosion resistance as a base steel. DLC (Diamond-Like Carbon) coating adds a further layer of surface hardness — DLC-coated surfaces measure significantly higher on the hardness scale than the underlying steel, making the blade face more resistant to abrasion, scratching, and surface wear through daily carry. The coating also provides additional corrosion protection and gives the blade the matte black appearance that makes the 5403-GREEN's colorway work. On MagnaCut, DLC is genuinely additive rather than compensating for a lesser steel.

7075 is an aircraft-grade aluminum alloy significantly stronger than the 6061 alloy used on most production folding knives. Where 6061 is adequate for most knife handle applications, 7075 offers higher tensile strength and fatigue resistance — it handles stress concentration around pivot holes and clip screws better over extended use. Pro-Tech machines the Malibu handle from 7075 and anodizes it smooth, which gives a cleaner surface finish than textured alternatives while benefiting from the stronger alloy underneath.

The reverse tanto has a primary flat cutting edge along the bottom and a secondary angled grind along the spine that sweeps up to meet it, creating a strong angular reinforced tip. This geometry provides a long, usable flat cutting section for everyday slicing tasks and a tip with significant point strength for precision entry work. Pro-Tech grinds the 5403-GREEN in a high flat grind, which produces a razor edge all the way to the tip and optimizes slicing performance across the full blade length.

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 rather than a separate detent ball component. 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 removes a potential wear point, while the tuned system delivers consistent deployment feel across the knife's service life.

No. The Malibu 5403-GREEN is a manual flipper — it deploys via a flipper tab on the blade spine and has no spring or coil mechanism. It carries no automatic knife legal restrictions and is legal in all US jurisdictions where folding knives are permitted, as well as in most international destinations where automatics would be prohibited. The ball-bearing pivot makes the deployment feel fast and snappy, but it is manual action throughout.

The Malibu 5403-GREEN measures 7.50 inches overall when open with a 3.25-inch blade. Closed length is 4.25 inches. It weighs 2.99 oz. The black mini deep-carry clip sits flush to the handle and a lanyard hole is included at the rear of the handle. At under 3 oz with a 7.5-inch overall it is one of the most carry-efficient full-size flippers in Pro-Tech's lineup.