Chamber flag and service tool

Abstract

The disclosure relates to a chamber flag with a substantially Z-shaped body having a central portion and a rod extending from the body; a chamber flag having a body defining an opening having an opening axis, and a rod extending from the body and having a rod axis substantially parallel to the opening axis, wherein the chamber flag is configured to support upper and lower receivers of a firearm at a fixed angle; and a method of temporarily securing a position of upper and lower receivers of a firearm by inserting a rod of a chamber flag into a pin channel of the upper receiver, inserting a portion of a body of the chamber flag into the lower receiver, wherein the lower receiver defines a pin opening, and inserting a pin through the pin opening and an opening defined by the body of the chamber flag.

We claim: 
     
         1 . A chamber flag comprising:
 a substantially Z-shaped body having a central portion, wherein the substantially Z-shaped body defines an opening therethrough; and   a rod extending from the substantially Z-shaped body.   
     
     
         2 . The chamber flag of  claim 1 , wherein the substantially Z-shaped body comprises a first leg extending from the central portion and a second leg extending from the central portion in a direction substantially opposite to the first leg. 
     
     
         3 . The chamber flag of  claim 1 , wherein the rod is substantially parallel to the central portion of the substantially Z-shaped body. 
     
     
         4 . The chamber flag of  claim 2 , wherein the first leg and the second leg are substantially orthogonal to the central portion. 
     
     
         5 . The chamber flag of  claim 2 , wherein the first leg defines the opening and the rod extends from the second leg. 
     
     
         6 . The chamber flag of  claim 1 , wherein a maximum outer width of the rod is substantially similar to a minimum inner width of the opening. 
     
     
         7 . The chamber flag of  claim 1 , wherein a maximum outer width of the rod is less than a minimum inner width of the opening. 
     
     
         8 . The chamber flag of  claim 1 , further comprising at least one tool extending from the chamber flag. 
     
     
         9 . The chamber flag of  claim 8 , wherein the tool comprises at least one of a spanner and a screwdriver. 
     
     
         10 . A chamber flag comprising:
 a body defining an opening having an opening axis; and   a rod extending from the body and having a rod axis substantially parallel to the opening axis, wherein the chamber flag is configured to support an upper receiver and a lower receiver of a firearm at a fixed angle when the rod is connected to the upper receiver and when the body is inserted into the lower receiver.   
     
     
         11 . The chamber flag of  claim 10 , wherein the opening in the body is configured to align with an opening defined by the lower receiver. 
     
     
         12 . The chamber flag of  claim 10 , wherein the body comprises a central portion, a first leg, and second leg, wherein the first leg extends from the central portion and the second leg extends from the central portion in a direction substantially opposite to the first leg. 
     
     
         13 . The chamber flag of  claim 10 , wherein the body comprises a first leg that extends in a direction substantially orthogonal to at least a portion of the rod. 
     
     
         14 . The chamber flag of  claim 13 , wherein the first leg defines the opening and the rod extends from the second leg. 
     
     
         15 . The chamber flag of  claim 10 , wherein a maximum outer width of the rod is less than or substantially similar to a minimum inner width of the opening. 
     
     
         16 . The chamber flag of  claim 10 , further comprising at least one tool extending from the chamber flag. 
     
     
         17 . The chamber flag of  claim 16 , wherein the tool comprises at least one of a spanner and a screwdriver. 
     
     
         18 . A method of temporarily securing a position of an upper receiver of a firearm and a lower receiver of the firearm, the method comprising:
 inserting a rod of a chamber flag into a pin channel of the upper receiver;   inserting a portion of a body of the chamber flag into the lower receiver, wherein the lower receiver defines a pin opening; and   inserting a pin through the pin opening and an opening defined by the body of the chamber flag.   
     
     
         19 . The method of  claim 18 , further comprising the step of removing a pin from the pin channel in the upper receiver before inserting the rod into the pin channel. 
     
     
         20 . The method of  claim 18 , wherein the portion of the body of the chamber flag is a first leg that extends in a direction substantially orthogonal to at least a portion of the rod.