The power handpiece for orthopedic drilling and sawing according to the present application at least includes a handle housing, a clamping assembly for clamping a cutting tool assembly, a power motor for outputting power and driving the cutting tool assembly to perform drilling and sawing operations, and a switch assembly for controlling power output of the power motor, wherein the power motor is connected to an external power source. The power machine utilizes an external power source which can be a large-scale accumulator or city electricity, thereby avoiding the situation of power failure or low power which is prone to occur in the operation, and ensuring the smooth performance of the operation, reduce the quantity of heat of the handle, reduce the overall weight of the device, make the device portable and easy to operate, and improve the efficiency of the operation.

The power handpiece for orthopedic drilling and sawing according to the present application at least includes a handle housing, a clamping assembly for clamping a cutting tool assembly, a power motor for outputting power and driving the cutting tool assembly to perform drilling and sawing operations, and a switch assembly for controlling power output of the power motor, wherein the power motor is connected to an external power source. The power machine utilizes an external power source which can be a large-scale accumulator or city electricity, thereby avoiding the situation of power failure or low power which is prone to occur in the operation, and ensuring the smooth performance of the operation, reduce the quantity of heat of the handle, reduce the overall weight of the device, make the device portable and easy to operate, and improve the efficiency of the operation.

A bolt action firearm that cocks the firing pin upon closing the bolt and includes a cam pin for a high velocity rimfire cartridge. In one embodiment, actuating the main spring while closing the bolt, instead of while opening the bolt, provides added safety against misfiring. A safety system is provided for the trigger mechanism and a robust connecting system for the stock.

A bolt action firearm that cocks the firing pin upon closing the bolt and includes a cam pin for a high velocity rimfire cartridge. In one embodiment, actuating the main spring while closing the bolt, instead of while opening the bolt, provides added safety against misfiring. A safety system is provided for the trigger mechanism and a robust connecting system for the stock.

A sliding safety device for use in AR-15 style and type of semi-automatic rifles is disclosed. The sliding safety device having cylindrical end portions is configured to prevent the discharge of semi-automatic rifle when the device is in a safe position. Additionally the invention includes the method of retrofitting the sliding safety device into the lower receiver of a semi-automatic style or type rifle after removal of the standard rotating safety selector device that has been in use since the inception of semi-automatic rifles of the AR-15 style or type.

A sliding safety device for use in AR-15 style and type of semi-automatic rifles is disclosed. The sliding safety device having cylindrical end portions is configured to prevent the discharge of semi-automatic rifle when the device is in a safe position. Additionally the invention includes the method of retrofitting the sliding safety device into the lower receiver of a semi-automatic style or type rifle after removal of the standard rotating safety selector device that has been in use since the inception of semi-automatic rifles of the AR-15 style or type.

A sliding safety device for use in AR-15 style and type of semi-automatic rifles is disclosed. The sliding safety device having cylindrical end portions is configured to prevent the discharge of semi-automatic rifle when the device is in a safe position. Additionally the invention includes the method of retrofitting the sliding safety device into the lower receiver of a semi-automatic style or type rifle after removal of the standard rotating safety selector device that has been in use since the inception of semi-automatic rifles of the AR-15 style or type.

A bolt action firearm that cocks the firing pin upon closing the bolt and includes a cam pin with dual heads for a high velocity rimfire cartridge. In one embodiment, actuating the main spring while closing the bolt, instead of while opening the bolt, more uniformly distributes the physical energy required by the user over the bolt actuation cycle. The dual heads of the cam pin provide symmetric reactive forces with dual cam slots, thereby preventing the cam pin from skewing or canting within the cam slots. A safety system is provided for the trigger mechanism and a robust connecting systems for the stock.

A bolt action firearm that cocks the firing pin upon closing the bolt and includes a cam pin with dual heads for a high velocity rimfire cartridge. In one embodiment, actuating the main spring while closing the bolt, instead of while opening the bolt, more uniformly distributes the physical energy required by the user over the bolt actuation cycle. The dual heads of the cam pin provide symmetric reactive forces with dual cam slots, thereby preventing the cam pin from skewing or canting within the cam slots. A safety system is provided for the trigger mechanism and a robust connecting systems for the stock.

A bolt action firearm that cocks the firing pin upon closing the bolt and includes a cam pin with dual heads for a high velocity rimfire cartridge. In one embodiment, actuating the main spring while closing the bolt, instead of while opening the bolt, more uniformly distributes the physical energy required by the user over the bolt actuation cycle. The dual heads of the cam pin provide symmetric reactive forces with dual cam slots, thereby preventing the cam pin from skewing or canting within the cam slots. A safety system is provided for the trigger mechanism and a robust connecting systems for the stock.