Spring assisted knives function with a legal mechanism and quickly deploy to allow a smooth operation similar to that of a switchblade. A switchblade is operated by pushing a button or sliding part of the handle to deploy the blade, while a spring assisted knife requires you to push the back of the blade in order to deploy it. The result is a very similar function and feel, without the legality issues. Whether you are looking for a tactical, EDC, hunting, or collector style spring assisted knife, we have it all here at Kolour Co.