Even if the button is pushed spring tension holds the knife open. To retract the blade the button is again pushed so that its slot lines up with the blade. The cocking arm is pulled backwards which itself pulls the blade backward. When automatic knives for sale online is totally withdrawed the spring mounted button rests in the forward notch and once again pops up and locks the blade in the cocked position.
Because the primary spring is continuously acting on the blade and is extended by a far greater quantity and is cocked by the entire hand and arm instead of by thumb the force it can apply on the blade is higher than with a double action knife. This will quickly allow the pointer of the blade to break skin when deployed and perhaps penetrate a couple of millimetres or to go through light clothing.
Legality [edit] Austria [edit] Starting with the Austrian Arms Act of 1996 switchblades, like all other knives, are normally legal to buy, import, possess or carry, no matter blade length or opening or locking system. The only exception are minors (specified as individuals under the age of 18) and people who have actually been expressly banned from owning and bring any weapon (Waffenverbot): both groups might only have knives which are ruled out "weapons" under the Arms Act, specified as "items that by their very nature are planned to lower or remove the protective capability of a person through direct impact".
In Austria the regulative laws of private states and the Assembly Act may restrict knives from being brought into a public building, school, public assembly, or public event. Australia [edit] In Australia, switchblades are banned by the Customizeds (Forbidden Imports) Regulations as a Prohibited Import. Australian customs refer to the automatic knife or switchblade as a flick knife.
At a state and local level, most jurisdictions state flick knives to be prohibited weapons in their respective acts, codes and regulations. Persons residing in states that do not have particular weapons legislation covering switchblades (such as Tasmania) are still covered by Federal Customs legislation, but in conditions where the state has no legislation versus such items, an exemption may be obtained and received if authorized by the chief supervisory officer of the authorities service in that state.