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Home > Knives + Tools > Assisted Opening Knives
 
Assisted Opening Knives

An assisted-opening knife is a knife that uses an internal mechanism to open the blade from a closed position when slight pressure is applied to the thumbstud or the flipper.

When the knife is in the closed position, the blade is held in place by means of 1 or 2 torsion bars. As the user applies manual pressure to the thumbstud to open the knife, a mechanism such as a torsion spring moves along a track in the liner and rapidly rotates the blade into the open and locked position.

There is a big difference between "spring assisted" knives and switchblades. While a switchblade can be opened automatically with the push of a button, with an assisted-opening knife you have to apply pressure to the blade at the thumb stud or flipper. Once the assisted opening knives have been opened about one-quarter of the way, the mechanism does the rest.

Some other names for assisted-opening knife are: Forward Action Spring Technology, A/O Knife, Torsion Assist Knife, Assisted Knife, Spring Assist Knife, Spring Assisted Knife, Quick Release, Quick Draw, Alternative Automatic, Outburst, SpeedSafe, Blade Launcher and the Semi-Auto.

The first assisted opening knife was designed by Blackie Collins and a similar concept was developed years later by Ken Onion with Onion.Please see our great selection of assisted open knives below.

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 We have 78 Assisted Opening Knives
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Kershaw RJ I Partially Serrated Knife - 1985ST
Kershaw RJ I Partially Serrated Knife - 1985ST
$48.99    
Kershaw Clash Partially Serrated Black Knife - 1605CKTST
Kershaw Clash Partially Serrated Black Knife - 1605CKTST
$46.99    
Kershaw Volt II Partially Serrated Black Knife - 3650CKTST
Kershaw Volt II Partially Serrated Black Knife - 3650CKTST
$46.99    
Kershaw Kuro Partially Serrated Black Knife - 1835TBLKST
Kershaw Kuro Partially Serrated Black Knife - 1835TBLKST
$39.99    
Kershaw Blur Olive Drab Plain Edge Knife - 1670OLBLK
Kershaw Blur Olive Drab Plain Edge Knife - 1670OLBLK
$89.99    
Kershaw Knockout Plain Edge Knife - 1870
Kershaw Knockout Plain Edge Knife - 1870
$94.99    
Assisted Open Smith and Wesson Black Ops Serrated Black Pocket Knife - SWBLOP3S
Assisted Open Smith and Wesson Black Ops Serrated Black Pocket Knife - SWBLOP3S
$51.99    
Buck Rush Assisted Open Folding Knife
Buck Rush Assisted Open Folding Knife
$76.99    
Benchmade Osborne Emissary Clip Point AXIS Folding Knife - 470-1
Benchmade Osborne Emissary Clip Point AXIS Folding Knife - 470-1
Your Price: $210.00
On sale: $174.99  
   
Benchmade Osborne Barrage Drop-Point AXIS-Assist Folding Knife - 580
Benchmade Osborne Barrage Drop-Point AXIS-Assist Folding Knife - 580
Your Price: $150.00
On sale: $124.99  
   
Benchmade Barrage Tanto-Point BK1 Partially Serrated AXIS-Assist Folding Knife - 583SBK
Benchmade Barrage Tanto-Point BK1 Partially Serrated AXIS-Assist Folding Knife - 583SBK
Your Price: $165.00
On sale: $136.99  
   
Benchmade Mini-Barrage Partially Serrated Mini-Drop Point AXIS-Assist Spring Assist Folding Knife - 585S
Benchmade Mini-Barrage Partially Serrated Mini-Drop Point AXIS-Assist Spring Assist Folding Knife - 585S
Your Price: $140.00
On sale: $116.99  
   
Smith & Wesson MAGIC Black Combo Edge Tanto Knife - SW911B
Smith & Wesson MAGIC Black Combo Edge Tanto Knife - SW911B
Your Price: $79.99
On sale: $72.99  
   
Smith & Wesson MAGIC Assist Open Black Combo Blade Knife - SWATLBS
Smith & Wesson MAGIC Assist Open Black Combo Blade Knife - SWATLBS
Your Price: $58.99
On sale: $53.99  
   
Smith & Wesson MAGIC Assisted Open Drop Point Knife - SWMP1
Smith & Wesson MAGIC Assisted Open Drop Point Knife - SWMP1
Your Price: $58.99
On sale: $53.99  
   
Smith & Wesson MAGIC Black Combo Edge Drop Point Knife - SWMP1BS
Smith & Wesson MAGIC Black Combo Edge Drop Point Knife - SWMP1BS
Your Price: $58.99
On sale: $53.99  
   
Smith & Wesson MAGIC Black Combo Edge Tanto Knife - SWMP3BS
Smith & Wesson MAGIC Black Combo Edge Tanto Knife - SWMP3BS
Your Price: $58.99
On sale: $53.99  
   
SOG Aegis Black Tanto Point Serrated Knife - AE04-CP
SOG Aegis Black Tanto Point Serrated Knife - AE04-CP
Your Price: $114.00
On sale: $94.99  
   
SOG Aegis Tanto Point Digi Camo Serrated Knife - AE-07
SOG Aegis Tanto Point Digi Camo Serrated Knife - AE-07
Your Price: $125.00
On sale: $103.99  
   
SOG Flash I Plain Edge Pocket Knife - FSA7-CP
SOG Flash I Plain Edge Pocket Knife - FSA7-CP
Your Price: $62.00
On sale: $51.99  
   
SOG Flash I Black Serrated Edge Knife - TFSA-97
SOG Flash I Black Serrated Edge Knife - TFSA-97
Your Price: $70.00
On sale: $57.99  
   
SOG Flash II Plain Edge Pocket Knife - FSA8-CP
SOG Flash II Plain Edge Pocket Knife - FSA8-CP
Your Price: $75.00
On sale: $62.99  
   
SOG Flash II Serrated Edge Knife - FSA-98
SOG Flash II Serrated Edge Knife - FSA-98
Your Price: $75.00
On sale: $62.99  
   
SOG Flash II Black Serrated Edge Knife - TFSA98-CP
SOG Flash II Black Serrated Edge Knife - TFSA98-CP
Your Price: $87.00
On sale: $72.99  
   
SOG Flash II Tiger Stripe Serrated Edge Knife - FSA5-CP
SOG Flash II Tiger Stripe Serrated Edge Knife - FSA5-CP
Your Price: $94.00
On sale: $77.99  
   
SOG Trident Tiger Stripe Plain Edge Pocket Knife - TF3-CP
SOG Trident Tiger Stripe Plain Edge Pocket Knife - TF3-CP
Your Price: $114.00
On sale: $94.99  
   
SOG Trident Mini Black Serrated Edge Knife - TF21-CP
SOG Trident Mini Black Serrated Edge Knife - TF21-CP
Your Price: $95.00
On sale: $78.99  
   
SOG Twitch II Black Plain Edge Pocket Knife - TWI12-CP
SOG Twitch II Black Plain Edge Pocket Knife - TWI12-CP
Your Price: $85.00
On sale: $69.99  
   
Gerber FAST Black Serrated Combo Blade Knife - 22-01966
Gerber FAST Black Serrated Combo Blade Knife - 22-01966
$69.99    
Gerber Fast Draw Serrated Folding Knife - 22-07161
Gerber Fast Draw Serrated Folding Knife - 22-07161
$39.99    
 
More results:  [1] 2 3  Next Page  View All  

Need an assisted opening knife? We have assisted opening knives. Need a spring assisted knife? We have spring assisted knives

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