Heretic Knife Manticore S DE Black Aluminum / Ultem, Black DLC Full Serrated MagnaCut by Tony Marfione Jr.
- Manticore-S Double Edge Black Aluminum / Ultem, Black DLC MagnaCut compact OTF automatic knife operating in D/A (Double Action) mode, with a slider to extend and retract the blade. Customised version by Tony Marfione Jr. of Heretic Knives!


This product is intended for use only by adults with knowledge and experience in handling sharp cutting tools. Improper use of the knife can result in serious injuries. The blade is extremely sharp and can easily cut through skin and tissue; therefore, extra caution should always be exercised while cutting, and hands should be kept away from the cutting edge. To prevent the knife from slipping, it is recommended to cut on a stable, non-slip surface and avoid excessive force, which may cause uncontrolled blade movement.
Leaving the knife on the edge of a table, countertop, or in easily accessible places—especially where children are present—poses a significant safety risk. The knife should always be properly secured after use, ideally by placing it on a stable surface or storing it in designated knife blocks, protective sheaths, or magnetic strips. The knife should never be used for tasks it is not designed for, such as opening cans or prying objects, as this can damage the tool and lead to dangerous accidents.
A dull blade increases the risk of injury, as it requires more force and is more likely to slip from the material being cut. Therefore, it is essential to sharpen the knife regularly to maintain optimal sharpness. Additionally, proper cleaning and drying of the knife are necessary to prevent corrosion and bacterial growth. Periodic inspection of the handle and blade is recommended to check for cracks, chips, or looseness. If any damage is detected, the knife should be repaired or replaced immediately.
When using the knife, focus solely on the task at hand—avoid talking on the phone, watching television, or other distractions while cutting. Ensure proper lighting in the workspace for better visibility and control. Please note that some countries or regions have laws restricting the ownership and carrying of knives. Before purchasing or using this knife, verify that its use is legal in your location according to applicable regulations.
Following these safety guidelines will help ensure safe and effective knife use, minimizing the risk of accidents and extending the lifespan of the tool.
Offering the same features as the larger models, the Manticore S DE Black Aluminum / Ultem, Black DLC is the smallest of the Manticore line. The blade, with a Double Action (D/A) mechanism, can be unfolded and folded with one hand. The smooth action of the knife starts with a stepped slide under the thumb, allowing the blade to be extended with confidence. Elegant flowing lines and jimping along the length of the handle add depth to the smooth body. The Handle is complemented by a hardened steel glass nailer.
CPM MagnaCut powdered stainless steel manufactured using the Crucible® Particle Metallurgy (CPM) process hardened to 60.5-62.5 HRC. The high content of vanadium 4.0% (V), molybdenum 2.0% (Mo) and niobium 2.0% (Nb) guarantees accuracy and purity unmatched by more 'conventional' steels. Designed and developed specifically for blade production by Larrin Thomas, it meets all the requirements of knife enthusiasts. With CPM MagnaCut has succeeded in creating a steel that combines the unique properties of knife steels like no other. The result is a blade material that offers an extraordinary balance of wear resistance, strength and corrosion resistance. There is currently no other steel on the world market that offers a comparable combination of excellent properties. This unique steel is produced at Crucible® Industries' US steel mills.
DLC (Diamond Like Carbon) coatings combining extreme properties: low coefficient of friction, high hardness and corrosion resistance. DLC coatings are the perfect solution wherever wear resistance and good sliding properties are required.
Blade - type DE (Double Edge) sharpened on both sides, with one blade Full Serrated and the other Plain. The durability of the surface has been increased with a black matt nano-composite DLC (Diamond Like Carbon) coating. The blade is derived with a high flat grind (Flat Grind) for excellent cutting properties. As a result, the knife has excellent piercing properties while maintaining its strength. The mechanism of extending / retracting the blade by means of a slider in a characteristic step, requiring for safety the application of a specific force to overcome the resistance of the spring. The opening method ensures trouble-free opening for both right and left-handed people.
ULTEM™ - a plastic belonging to the Polyethermoids family or simply PEI. This material is primarily characterised by its high mechanical and impact strength with a very high strength-to-weight ratio. It is also characterised by a high thermal resistance (180⁰C) and a high chemical resistance to all types of solvents (synthetic and natural), lubricants and other chemicals. Add to this the total insensitivity to atmospheric conditions, and you have the ideal material for knife handles.
Handle - made on CNC milling machines with perfect precision, from black DLC-coated 6061-T6 aluminium. Perfectly fitting liners made of the innovative Ultem™ material. The same material is used for the opening and closing slide of the knife. Handle texture ensures that the knife does not slip in the hand during use. There are notches (jimping) on the back and bottom of the handle for a more secure grip. The slim design allows the knife to be tucked into any pocket. A solid two-position (right/left) deep carry clip allows the knife to be carried in a tip-down position. The Handle is finished with a glass breaker.
Technical data:
Product number: H024-6C-ULTEM
Product name: Manticore S Double Edge Black Aluminum / Ultem, Black DLC
Overall length: 165.0 mm / 6.5"
Blade length: 66.7 mm / 2.625"
Blade thickness: 2.3 mm / 0.09"
Handle length: 101.0 mm / 3.965"
Handle thickness: 8.4 mm / 0.33"
Weight: 48.2 g / 1.7 oz
Blade material: CPM MagnaCut
Blade hardness: n.d.
Blade grind: Flat
Blade finish: Black DLC coating
Handle material: 6061-T6 Aluminium with Ultem™ Inlays
Handle finish color: Black / Yellow
Backspacer material: 6061-T6 Aluminium
Backspacer colour: Black
Clip: Right / left, Tip-down
Clip material: Stainless Steel
Pivot mechanism: n.d.
Locking mechanism: Slide Lock
Opening method: Automatic, push/pull Thumb slider
Additional accessories: None
Designer: Tony Marfione Junior
Brand: Heretic Knives
Manufacturer: Heretic Knives
Country of origin: USA
Developed by: Sharg® company