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1/2 High Torque Coil Switchblade Spring Boker & Smith & Wesson LARGE Models

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Made in the USA - High Quality Right Hand Wound Springs with Cryo & Heat Treatment.

High Grade Music Wire is used and then treated for wear and tear.

Springs have a protective coating to protect them from the elements.  They are safe to use in humid and rust prone areas with no corrosion issues.

This is a conversion spring to adapt button lock knives into a fully automatic switchblades.

This is a replacement spring for fully automatic switchblades. This spring fits Boker Magnum Mini models and Smith & Wesson Exteme Ops models.

Boker Magnums Models:  BOM007, BOM008, BOM017, and BOM018

Boker Kalashnikov Models:  BOMS74, BOMS74B, BOMS74DES, all Kalashnikov models

Smith & Wesson Exteme Ops:  SW50, SW50S, SW50T, SW50TS, SW50BS, SW50B, SW50BT, SW50BTS, VERSION 1 (this is where the safety lock is on the spine of the handle)

Our High Torque springs will directly replace most existing springs. In many cases, you’ll have more opening power than the current spring being replaced because of our consistency in manufacture and the additional heat and cryo treatment processes that we use. A strong, smooth opening action are the characteristic of this model.

Specification Tolerances:
Coil Diameter:  0.4985 - 0.50"
Stack Height:  0.1545 - 0.157"
Wire Diameter:  0.0385 - 0.039"

Spring are for knives with 6 o’clock tab cutout for the handle and a 4 o’clock eyelet tab on the blade.

This means the springs are clocked at 12 and 3.

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