Microtech Nemesis IV Marfione Select -- a single-action OTF automatic with a 4.4" M390MK dagger blade in stonewash, on a 5.8" black hardcoat-anodized aircraft-alloy handle with double vapor-blast 17-4 stainless hardware. 10.2" overall. Made in the USA, carries Microtech limited lifetime warranty, and comes with its Microtech Declaration of Authenticity.
The Nemesis is at the large end of what Microtech build as an out-the-front. 10.2" overall with a 4.4" blade, on a handle machined from aircraft alloy rather than moulded -- the size and the material together are most of why it feels the way it does in the hand.
Single-action means the button fires the blade out and the blade is then retracted by hand, rather than driven both ways by the button. The practical difference: a single-action mechanism puts its whole spring behind one job, so deployment is harder and faster than a comparable double-action, at the cost of closing it manually.
M390MK is Böhler M390 Microclean, a powder-metallurgy stainless. Powder production gives it a fine, evenly distributed carbide structure rather than the coarse one conventional melting produces, and M390's chromium and vanadium content makes it one of the most wear-resistant stainless steels in production -- it holds an edge a very long time, and it is genuinely stainless while doing it.
The blade is a dagger, stonewash finished. Stonewash is the finish that ages best on a knife that gets handled: it scatters light, so handling marks blend in instead of showing as scratches against a polish.
5.8" of black hardcoat-anodized aircraft aluminium alloy. Hardcoat anodising is a thick, hard oxide layer grown into the surface of the metal rather than a paint laid on it, so it wears rather than chips. The hardware is double vapor-blast 17-4 stainless.
Ships with its Microtech Declaration of Authenticity, and carries Microtech limited lifetime warranty.
New in box, with all manufacturer-included items.
M390.
Comparison ratings are Bearly Defense’s own 0–10 scale for judging steels against each other. They are a considered opinion, not a laboratory measurement. Composition and hardness figures below come from the manufacturer’s published datasheet.
voestalpine BÖHLER Edelstahl · Austria
A corrosion-resistant martensitic chromium steel produced by powder metallurgy, approved by Böhler for food and beverage contact. It was developed in the late 1980s as a modification of the cold-work tool steel K190, for the plastics processing industry. The stated design target was high wear and corrosion resistance; high toughness was explicitly not a priority for that application.
| CarbonC | 1.90% |
|---|---|
| ChromiumCr | 20.00% |
| MolybdenumMo | 1.00% |
| VanadiumV | 4.00% |
| TungstenW | 0.60% |
| ManganeseMn | 0.30% |
| SiliconSi | 0.70% |
Not published on the datasheet: Niobium, Cobalt, Sulfur, Nitrogen.
The trade-offTrades toughness for edge retention and corrosion resistance: roughly 22% total carbide volume, and chromium carbides run larger than vanadium carbides in powder steels, which limits toughness.
Böhler publish no hardness figure in the datasheet text — only a tempering diagram. This is the figure reported for production knives by Knife Steel Nerds.
Böhler do not publish a nitrogen figure for M390, although roughly 0.2% is reported elsewhere as an intentional addition. It is left out here rather than presented as a datasheet value.
Sources: BÖHLER M390 MICROCLEAN datasheet · Knife Steel Nerds — M390
Bearly Defense only ships an item to states where it is legally allowed to be sold. Eligibility is confirmed against your shipping address at checkout — sign in or save a default shipping address to see the verdict for your state here.
DC is the District of Columbia — a shipping destination, not a state.
This reflects where Bearly Defense chooses to ship and the laws informing that decision. It is not legal advice. Laws change and local/municipal rules may differ — verify your own state and city law before you buy, carry, or use any item.
Why Microtech Nemesis IV Marfione Select — M390 Dagger ships the way it does.
A tool, not a weapon — none of our products are designed, sold, or intended for use as offensive weapons. Our catalog consists of multi-tools and personal utility items built for valuable, legitimate purposes such as outdoor use, everyday carry, personal safety, and practical work, and we intend every item to be fully lawful. Even so, the laws governing the purchase, possession, carry, and use of tools like these vary widely by state, county, and city, and some state or local laws may still interpret an item as less-than-legal regardless of its intended purpose or construction. It is the buyer's sole responsibility to know and comply with all laws applicable to these items in their jurisdiction, and to verify that any product ordered is legal for them to buy, possess, carry, and use before completing a purchase. This notice is not legal advice, and Bearly Defense makes no representation about the legality of any product in any specific jurisdiction; if you are uncertain whether a product is lawful in your area, consult a licensed attorney before purchasing. By completing a purchase you affirm that you are of legal age to do so in your jurisdiction, that you intend to use the product lawfully and not as an offensive weapon, and that you accept sole responsibility for compliance with all applicable federal, state, and local laws.
This reflects where Bearly Defense chooses to ship and the laws informing that decision. It is not legal advice. Laws change and local/municipal rules may differ — verify your own state and city law before you buy, carry, or use any item.
Laws governing self-defense and carry items vary widely by country, state, and municipality. It is the purchaser's responsibility to comply with all applicable laws and regulations. Please check your local laws before purchase and ensure this product is permitted where you live, travel, and intend to carry it.
Disclaimer: Laws vary by jurisdiction. Users are solely responsible for compliance. Intended for lawful defensive and utility applications only.
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