Abstract: A non-firing housing imitates a functioning receiver for an M249 machine gun. The non-firing housing includes one or more of a number of alterations as compared to a functioning M249 receiver. Such alterations include: providing a non-firing barrel support with substantial dimensional differences as compared to a standard M249 barrel support; providing a non-firing barrel support with additional structural features that prevent any bolt head (and particularly a standard M249 bolt head) from entering the battery position; providing right or left non-firing bolt rails with dimensional or structural or positional alterations as compared to standard right and left bolt rails for a standard M249; providing the non-firing housing with the absence of an ejection port; providing a non-firing right bolt rail with the absence of a hinge bore; and providing a non-firing left bolt rail with the absence of an ejector pin bore and back stop material.

Abstract: A trigger assembly for a trigger housing for a, M249 fully automatic rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A trigger assembly for a trigger housing for a, M60 fully automatic rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A non-firing housing imitates a functioning receiver for a semi-automatic or fully automatic gun. The non-firing housing includes a thick sidewall that is thicker than the corresponding sidewall of the functioning receiver such that the non-firing housing prohibits the receipt of at least one of the required firing components that are received in the functioning receiver to create a functioning gun, thus prohibiting the use of the non-firing housing as a functioning receiver in a semi-automatic or fully automatic gun.

Abstract: A trigger assembly for a trigger housing for a, M60 fully automatic rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A trigger assembly for a trigger housing for a, M249 fully automatic rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A trigger assembly for a trigger housing for an M240 Assault Rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A non-firing housing imitates a functioning receiver for an M249 machine gun. The non-firing housing includes one or more of a number of alterations as compared to a functioning M249 receiver. Such alterations include: providing a non-firing barrel support with substantial dimensional differences as compared to a standard M249 barrel support; providing a non-firing barrel support with additional structural features that prevent any bolt head (and particularly a standard M249 bolt head) from entering the battery position; providing right or left non-firing bolt rails with dimensional or structural or positional alterations as compared to standard right and left bolt rails for a standard M249; providing the non-firing housing with the absence of an ejection port; providing a non-firing right bolt rail with the absence of a hinge bore; and providing a non-firing left bolt rail with the absence of an ejector pin bore and back stop material.

Abstract: A trigger assembly for a trigger housing for an M240 Assault Rifle is provided having a switch accessible at the outside of the trigger housing for changing the firing of the rifle between semi-automatic and fully-automatic fire.

Abstract: A striking mechanism for the semi-automatic operation of a cartridge firing firearm includes a receiver, a barrel attached to the receiver and providing a breach, an op rod assembly, and a bolt adapted for reciprocating movement within the receiver and engagable with the breach of the barrel and the face of a cartridge chambered therein. The bolt carries a primary firing pin, and a bolt lock means is pivotally connected to the bolt for selectively locking the bolt within the receiver. A bolt link assembly is pivotally connected to the bolt lock means and to the op rod assembly. The bolt link assembly provides a bolt link transfer pin. An op rod transfer pin is carried by the op rod assembly and can engage the bolt link transfer pin.

Abstract: A striking mechanism for the semi-automatic operation of a cartridge firing firearm includes a receiver, a barrel attached to the receiver and providing a breach, an op rod assembly, and a bolt adapted for reciprocating movement within the receiver and engagable with the breach of the barrel and the face of a cartridge chambered therein. The bolt carries a primary firing pin, and a bolt lock means is pivotally connected to the bolt for selectively locking the bolt within the receiver. A bolt link assembly is pivotally connected to the bolt lock means and to the op rod assembly. The bolt link assembly provides a bolt link transfer pin. An op rod transfer pin is carried by the op rod assembly and can engage the bolt link transfer pin.

Abstract: A non-firing housing imitates a functioning receiver for a semi-automatic or fully automatic gun. The non-firing housing includes a thick sidewall that is thicker than the corresponding sidewall of the functioning receiver such that the non-firing housing prohibits the receipt of at least one of the required firing components that are received in the functioning receiver to create a functioning gun, thus prohibiting the use of the non-firing housing as a functioning receiver in a semi-automatic or fully automatic gun.