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The OOW240 GPMG (General Purpose Machine Gun) is similar to the FN M240 but with a select fire trigger group, which is capable of semi-automatic and fully automatic fire. Ohio Ordnance Works also sells the same select fire trigger group separately and is compatible with the FN M240 and other FN MAG variants. [30]
This allows for an increased rate of fire. However, the shooter must still manually pull the trigger each time it resets for any subsequent shot to be fired. An image of a forced reset trigger from ATF’s Ammunition Technology Division: Technical Bulletin 22-01. Forced reset triggers are installed through replacement of the trigger control group.
The weight of the cyclic components of the gun has been doubled (while retaining the weapon's weight at less than 8 pounds). Compared to the standard M4, which in automatic fires 700–950 rounds a minute, the rate of fire of the ArmWest, LLC M4 is heavily reduced both to save ammunition and reduce barrel wear.
Rate of fire may also be affected by ergonomic factors. For rifles, ease-of-use features such as the design of the bolt or magazine release can affect the rate of fire. For artillery pieces, a gun on a towed mount can usually achieve a higher rate of fire than the same weapon mounted within the cramped confines of a tank or self-propelled gun ...
A hell-fire trigger is a device that allows a semi-automatic firearm to fire at an increased rate. The hell-fire clamps to the trigger guard behind the trigger and presses a "finger" against the back of the trigger to increase the force that returns the trigger to its forward position, effectively decreasing the time required for the trigger to reset, allowing for a faster follow-up shot.
The M27 Infantry Automatic Rifle (IAR) is a 5.56mm, select-fire assault rifle / squad automatic weapon developed from the HK416 by Heckler & Koch.It is used by the United States Marine Corps (USMC) and was originally intended for automatic riflemen, [6] but now is issued to all infantry riflemen as a replacement for the M4 carbine.
The M249 SAW combines the rate of fire of a machine gun with the accuracy and portability of an assault rifle. The M249 SAW is gas operated and air-cooled. It features a quick-change barrel (enabling the operator to rapidly replace an overheated or obstructed barrel) and a folding bipod attached to the front of the weapon (an M192 LGM tripod is ...
A binary trigger (or pull and release trigger) is a type of device that allows a semi-automatic firearm to fire at an increased rate. A binary trigger works by firing one shot upon pulling the trigger and then firing a subsequent shot upon release of the trigger. Binary triggers are installed through modification of the fire-control group.