MAC Coltellerie Gunster Diving Knife Black FRN, Satin MA5 by Moris Baroni (GNR11.N)
- Gunster Black FRN, Satin, a fixed-blade diving knife and multi-tool that combines a Dagger blade, a durable FRN handle, and a rotating sheath with a Compression-Lock locking system. Features a carabiner socket and an arrow straightening tool.
64,27 €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.
MAC Coltellerie Gunster Black FRN, Satin MA5 by Moris Baroni – a diving knife with a Dagger blade and a 360° rotating sheath
MAC Coltellerie Gunster Black FRN, Satin MA5 by Moris Baroni (GNR11.N) is a fixed-blade diving knife designed as a multifunctional tool for underwater and emergency applications. The model features a Dagger blade with both smooth and serrated edges, a durable FRN handle, and a rotating sheath with a Compression-Lock system.
The design is complemented by a carabiner socket, a harpoon shaft straightener, a steel hammer in the head, and a hole for a safety lanyard. Two rubber straps with plastic buckles allow the sheath to be attached to the hand, leg, or appropriate piece of equipment.
MA5 – Stainless Steel for Diving Applications
The blade is made of MA5 stainless steel with a hardness of 56–58 HRC. This material provides good corrosion resistance, edge retention, and the ability to be easily resharpened. After contact with saltwater, the knife should be rinsed with fresh water, thoroughly dried, and periodically treated with a suitable preservative.
Dagger, Plain / Serrated, and Flat Grind
The Dagger profile features a distinct tip and symmetrical, technical geometry. One side of the blade has a smooth edge for controlled cuts, while the other is serrated for cutting ropes, straps, nets, and fibrous materials. The Flat grind supports stable blade control, while the Satin finish gives the surface a subdued appearance.
FRN Handle and Compression-Lock System
The handle is made of FRN – Fiberglass Reinforced Nylon, which is resistant to moisture and mechanical damage. The knife is held in the sheath by the Compression-Lock system, and a rotating adapter allows the sheath to be positioned at any angle within a 360° range.
Key Features at a Glance
- MA5 — stainless steel with a hardness of 56–58 HRC.
- Dagger — symmetrical profile with a distinct tip.
- Plain / Serrated — smooth and serrated edges.
- Flat — flat grind for effective cutting.
- FRN — a lightweight, moisture-resistant Handle.
- Compression-Lock — a system for locking the knife in the sheath.
- 360° Sheath — adjustable mounting angle.
- Additional tools — shackle socket, spear straightener, and hammer.
Technical data
| Product number | GNR11.N |
| Product Name | MAC Coltellerie Gunster Black FRN, Satin MA5 by Moris Baroni |
| Overall Length | 210.00 mm / 8.27“ |
| Blade length | 110.00 mm / 4.33” |
| Blade thickness | 4.00 mm / 0.16“ |
| Handle Length | 101.60 mm / 4.00” |
| Handle Thickness | N/A |
| Weight | 115.00 g / 4.05 oz |
| Blade Material | MA5 Stainless Steel |
| Blade Hardness (HRC) | 56–58 HRC |
| Blade grind | Flat |
| Blade finish | Satin |
| Handle material | FRN – Fiberglass Reinforced Nylon |
| Handle finish color | Black |
| Sheath | Plastic / Polymer, Black, 360° Rotating Sheath |
| Additional Accessories | 2 rubber straps with plastic buckles |
| Designer | Moris Baroni |
| Brand | MAC |
| Manufacturer | MAC Coltellerie |
| Country of Origin | Italy |
Frequently Asked Questions
How do I care for MA5 steel after diving in saltwater?
After use, rinse the knife, sheath, and straps with fresh water. The blade must be thoroughly dried, and before long-term storage, you can protect it with a thin layer of preservative.
What are the two different edges for?
The smooth edge is ideal for controlled cuts, while the serrated edge is more effective at cutting ropes, nets, straps, and fibrous materials.
How does the Compression-Lock system work?
Compression-Lock secures the knife in the sheath using spring-loaded components. Compressing these components allows for quick release and removal of the knife.
What is the harpoon shaft straightener used for?
The contoured slot allows for the correction of minor deformations in the metal shafts used in spearguns.
How do you attach the swivel sheath?
The sheath can be attached to your hand, leg, belt, or compatible gear. The 360° adapter allows you to position it at an angle that ensures comfortable access to the Handle.
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