Gripknife - Defender

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Gripknife - Defender

The Gripknife Defender is the light-weight edition to the Gripknife Weapon Systems. It’s design is based off our strongest flagship model, the Gripknife Patriot. Like all of our products, the Gripknife Defender is precision machined using high quality materials and processes and Made In USA. Gripknife Defender—same great design, but lighter.

The Gripknife weapon system is your foregrip and your combat knife in one. When entering a room in close quarters, no blade can be deployed and used faster than Gripknife; it's only a fraction of a second. With training, the deployment can become a seamless instinctive strike that can be employed in the tightest of spaces. Whether it's used for weapon retention, to eliminate a threat, or because it's your last line of defense, Gripknife goes with you and is already in your hand when needed most.

 DETAILS:

Gripknife – 4” Defender
Knife Type: Foregrip
User: Ambidextrous 
Mechanism: Out-The-Front
Action: Magnetic Assist ™ Spring Assist
Overall Length: 8.10"
Overall Mounted Length (From Tactical Rail): 5.50"
Blade Type: Spear Point, Single-Edged, No Blood Groove
Blade Grind: Flat
Blade Length: 4.00"
Blade Material: A2
Blade Width: ≈1.06" 
Blade Thickness: .187"
Blade Finish: Black Nitride
Handle Material: Zytel
Handle Color: Black
Handle Texture: 60 Grit
Handle Width 1.50"
Handle Thickness: .96"
Blade Lock: Linear Cam™
Blade Lock Material: 17-4ph CNC Machined
Blade Lock Coating: None/Stainless
Chassis: Model 7
Chassis: 2-Piece Dovetail, Interlocking
Chassis Material: 7075 Aluminum CNC Machined
Chassis Coating: Hard Coat Anodized
Chassis Lubricant: Self-Lubricating 
Sheath: Rail Mounting Sheath
Weight Overall: 9.30oz. / Knife Only: 5.60oz.
Best Use: Defense
Design Type: Light Duty
Made: In USA 

 THE SUCCESS OF THE MODEL 7 CHASSIS:

We started from scratch. We did away with the standard of having grips layered on top of thin “cookie cutter” type liners, of which are all then held together by many small screws, spacers, pins, etc. (fail points). We built a 2-piece frame—a Chassis. Our Model 7 Chassis is 2 pieces interlocked together—even without the use of screws it’s already incapable of moving in nearly every direction—this eliminates the majority of the weaknesses found in most collapsible knives made today. Nothing like this has ever been done, but we wanted to achieve a level of strength never before imagined. We wanted our strength to come from design, not the amount of hardware added to the design—in fact, we wanted as few parts and hardware as possible, and this is why the chassis is only 2 parts and 2 screws. Our Model 7 Chassis is our latest design that delivers a new standard of collapsible knife strength, engineering, and precision.  

7075 Aircraft Grade Aluminum
Hard Coat Anodized 
Precision Machined
Self-Lubricating
Wear Resistant
Corrosion Resistant
Minimal Blade Contact
Precision Blade Transition
Dovetail Track  

The Blade:

A2
Vacuum Heat Treatment

Precision Machined
Wear Resistant
Corrosion Resistant
Minimal Blade Contact
Precision Blade Transition
Black Nitride 

WE REINVENTED THE LOCK:

The problem was that blade locks on traditional out-the-front knife designs are considered by many to be “inherently weak” when compared with other collapsible knife designs such as your folding knives. We needed something stronger, something that could compete with the locks of folding knives—something that could bust through concrete, and to the best of our knowledge, locks that strong don’t exist on any knife. First we needed a lock that worked reliably, and then we needed to make it stronger than anything ever before, if that was possible. While sweeping the shop floor, the design idea was born. Within a week we had a working prototype, and as if it were meant to be, it worked reliably the very first time. After several tweaks (and broken cinder blocks) later, the official Linear Cam Locks were born. Relying heavily on the design of the chassis to create strength through synergy, our locks can withstand a variety of extreme forces on a level that we believe has never been attained in a collapsible production knife. 

17-4 Stainless Steel
Precipitation Hardened 
Precision Machined
Premium Protective Coating
Wear Resistant
Corrosion Resistant
Minimal Blade Contact
Precision Blade Transition
Type: Linear Cam
Seated, Pressed, Bolted 

FIRING BUTTON & CATCH:

17-4 Stainless Steel 
Precipitation Hardened 
Precision Machined
Wear Resistant
Corrosion Resistant
Button is Injection Molded DuPont Zytel

 

BLADE UNLOCK BUTTON:

Free floating 
Precision Machined
6061 Aircraft Grade Aluminum
Wear Resistant
Corrosion Resistant
Hard Coat Anodized 

 

MODEL#4 RAIL MOUNTING SHEATH:

Weight Overall: 3.70oz.
Material: Black Zytel
Lock Material: 17-4ph CNC Machined Stainless
Attaches to: Picatinny Rail Section

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