Accession Number : ADD008289

Title :   Dual-Mode Firing Mechanism.

Descriptive Note : Patent,


Personal Author(s) : Stewart,Paul E

Report Date : 15 Jul 1980

Pagination or Media Count : 6

Abstract : This patent discloses a dual-mode firing mechanism for a high-rate-of-fire rifle capable of firing small arm cartridges conventionally by the application of a hammer, and inertially, bypassing the trigger mechanism, to provide sustained fire of a discrete number of cartridges in a burst. A trigger hammer fires the first round and simultaneously locks the firing pin in a firing position relative to an operating rod assembly. The operating rod assembly with the firing pin in the firing position, then cycles between a full forward or firing position and a short stroke rearward position in synchronism with fresh cartridges being inserted into the battery. The cycling continues until a last cartridge in the burst is fired. After the last round, the mechanism returns to its original or non-firing position and is ready for the next burst. The mechanism is rapid, for example, approximately 4,000 to 5,000 shots per minute can be fired in each three round burst. (Author)

Descriptors :   *Patents, *Firing mechanisms(Weapon), Dual mode, Rifles, Small arms ammunition, Firing rates, High rate, Firing pins, Locking(Mechanics), Semiautomatic weapons

Subject Categories : Guns

Distribution Statement : APPROVED FOR PUBLIC RELEASE