Product Description
The Benchmade Necron BM99BK-1 combines premium blade steel with a user-tunable balance system built specifically for butterfly knife flippers and collectors. Designed around a 4.59" CPM-S30V stainless steel scimitar blade with a blackwashed finish, this high-performance Bali-Song features vibrant Ruby Red G-10 handle scales with adjustable tungsten weights for customized flipping feel.
CPM-S30V Stainless Steel is a particle metallurgy powder steel developed specifically for cutlery, featuring a vanadium carbide microstructure that delivers exceptional edge retention, corrosion resistance, and impact toughness. Hardened to 58–60 HRC, the 4.59" scimitar blade features a full-flat grind for clean slicing geometry and an upswept belly that concentrates cutting power toward the tip.
- Blade: 4.59" CPM-S30V scimitar with Plain edge, Flat grind, Blackwashed finish, 0.12" thick.
- Handle: Ruby Red G-10 scales with removable/adjustable tungsten weights and handle extensions; 0.60" handle thickness; 5.08" closed, 4.21 oz.
- Deployment + Lock: Bali-Song butterfly design; Latch Lock mechanism.
- Carry: Pocket carry (no pocket clip); 9.68" overall open length.
Ideal for: experienced Bali-Song flippers, competitive practitioners, collectors, and users who want a production butterfly knife engineered with customizable balance.
The Benchmade Necron Bali-Song in CPM-S30V Blackwashed with Ruby Red G-10 (BM99BK-1) ships same or next business day from Columbia, Louisiana. Knifeworks is an authorized Benchmade dealer.
Benchmade Necron BM99BK-1: Frequently Asked Questions
Answers to the most common questions about the Benchmade Necron Bali-Song (BM99BK-1).
What sets the Benchmade Necron BM99BK-1 apart from other butterfly knives?＋
The Necron's defining feature is its adjustable and removable tungsten weight system integrated into the Ruby Red G-10 handle scales. Combined with removable handle extensions, it allows flippers to shift the knife's balance point and swing momentum to match their individual technique.
What steel is used for the Benchmade Necron BM99BK-1?＋
The Necron BM99BK-1 uses CPM-S30V powder metallurgy stainless steel heat-treated to 58–60 HRC with a Blackwashed finish, delivering outstanding edge retention, toughness, and corrosion resistance.
How does the tungsten weight system work on the Necron?＋
Adding, removing, or repositioning the dense tungsten weights shifts the knife's center of gravity forward or rearward, changing the swing arc and handle behavior during manipulation.
Where is the Benchmade BM99BK-1 made, and what warranty covers it?＋
The Benchmade Necron is proudly made in Oregon City, Oregon, USA. Benchmade backs the knife with a Limited Lifetime Warranty and free LifeSharp lifetime tuning and sharpening service. Knifeworks does not warranty this product independently.
CPM-S30V STEEL · BLACKWASHED · RUBY RED G-10
The USA-Made Tunable Butterfly Knife
A 4.21 oz Bali-Song featuring a 4.59" CPM-S30V blackwashed scimitar blade, Ruby Red G-10 handles, and adjustable tungsten weights. Questions? Our team carries these knives daily. We ship same or next business day from Columbia, Louisiana.
Call 888-225-9775
Warranty Information
Benchmade Warranty: Benchmade warrants that its genuine products are free from defects in material and workmanship for the life of the product. The warranty does not cover normal wear and tear, rust, accidents, misuse, improper maintenance, or alterations. Benchmade offers free lifetime LifeSharp services for sharpening and inspection. Contact Benchmade directly for warranty and LifeSharp support. Knifeworks does not warranty this product independently.Specifications
| Product Type | Butterfly | |
| Product Brand | Benchmade | |
| Model Name | Necron | |
| SKU / Model Number | BM99BK-1 | |
| Overall Length | 9.68 in | |
| Closed Length | 5.08 in | |
| Blade Length | 4.59 | |
| Blade Thickness | 0.12 | |
| Handle Thickness | 0.60 | |
| Blade Material | CPM-S30V | |
| Blade Hardness | 58-60 HRC | |
| Blade profile | Scimitar | |
| Blade Edge | Plain | |
| Blade Grind | Flat | |
| Blade Finish | Blackwashed | |
| Handle Material | G-10 | |
| Handle Color | Ruby Red | |
| Weight System | Adjustable and Removable Tungsten Weights + Handle Extensions | |
| Lock Type | Latch Lock (Bali-Song) | |
| Knife Weight | 4.21 oz | |
| Origin | USA | |
| Warranty | Benchmade manufacturer's warranty against defects in materials and workmanship | |
| Blade Range | 4-4.99 |
