Semi-automatic rifle restrictor mechanism and methods

Abstract

In a method of converting a semi-automatic rifle to a single shot rifle, a production semi-automatic rifle converted to a single shot rifle includes: a) conventional rifle components, including a receiving trigger, trigger guard, barrel; b) a semi-automatic firing mechanism including a gas actuated casing ejection and bolt reset mechanism including a bolt carrier with two carrier gas key threaded receiving orifices and having no production carrier gas key and a having a dual-bored metal block gas blocking mechanism attached to the bolt carrier and positioned so as to inhibit semi-automatic operation of the semi-automatic rifle by disabling the automatic gas actuated casing ejection and automatic gas actuated bolt reset functionality. In some embodiments, a modified charge handle has an extension with two attachment orifices corresponding to the metal block gas blocking mechanism orifices and is coincidentally attached to the bolt carrier.

What is claimed is: 
     
         1 . A method of converting a semi-automatic rifle to a single shot action rifle which consists of:
 a) removing the bolt carrier with carrier gas key from the upper component of said rifle;   b) removing said carrier gas key from said bolt carrier;   c) installing a dual-bored metal block gas blocking mechanism in place of said carrier gas key on said bolt carrier attached to said bolt carrier at said two threaded carrier gas key receiving orifices; and,   d) inserting said bolt carrier with said metal block gas blocking mechanism into the upper component of said rifle so as to inhibit semi-automatic operation of said semi-automatic rifle by disabling the automatic gas casing ejection and automatic gas actuated bolt reset functionality casing ejection and bolt reset gas functionality.   
     
     
         2 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  11  wherein said metal block gas blocking mechanism is a metal selected from the group consisting of an aluminum, titanium, steel and stainless steel. 
     
     
         3 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  11  wherein said bolt carrier has a top flat portion with two threaded orifices for receiving carrier gas key screws and said metal block gas blocking mechanism contains two corresponding orifices and said step c) installing is performed by screwing said metal block gas blocking mechanism to said bolt carrier. 
     
     
         4 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  11  wherein said metal block gas blocking mechanism is a unitary component. 
     
     
         5 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  11  wherein said metal block gas blocking mechanism is a two-component metal block gas blocking mechanism. 
     
     
         6 . A method of converting a semi-automatic rifle to a single shot action rifle which consists of:
 a) removing the charge handle and bolt carrier with carrier gas key from the upper component of said rifle;   b) removing said carrier gas key from said bolt carrier;   c) installing a block and a charge/pull handle combination mechanism in place of said carrier gas key on said bolt carrier, that includes a dual-bored and threaded metal block gas blocking mechanism and an extended, charging handle; and,   d) inserting bolt carrier with said metal block gas blocking mechanism and said charge/pull handle combination mechanism into the upper component of said rifle.   
     
     
         7 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  16  wherein said metal block gas blocking mechanism and charge handle combination is selected from the group consisting of an aluminum, titanium, steel and stainless steel. 
     
     
         8 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  16  wherein said bolt carrier has a top flat portion with two threaded orifices for receiving carrier gas key screws and each of said metal block gas blocking mechanism and said charging handle contains two corresponding orifices and said step c) installing is performed by screwing said metal block gas blocking mechanism and said charging handle combination to said bolt carrier. 
     
     
         9 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  16  wherein said metal block gas blocking mechanism and charge handle combination is a unitary component. 
     
     
         10 . The method of converting a semi-automatic rifle to a single shot action rifle of claim  16  wherein said metal block gas blocking mechanism and charge handle combination is a two-component metal block gas blocking mechanism.