Patent ID: 7516570
Filing Date: 2009-04-14
Classification: F41A

Abstract:
1. A method of constructing a firing pin assembly, comprising: providing a firing pin shaft including: providing a firing pin having a retention end and a firing end, the retention end including a head portion projecting therefrom, and a top edge comprising a notch proximate to the head portion; inserting the head portion of the firing pin into the channel of the firing pin shaft; moving a main spring over the firing pin and over the firing pin shaft; placing a main spring sleeve along the firing pin shaft; compressing the main spring toward the main spring sleeve with a spring retaining sleeve, the spring retaining sleeve including at least one inwardly directed side surface; and rotating the spring retaining sleeve to bring the at least one inwardly directed side surface into locking engagement with the notched end of the firing pin.