Adjustable length stock assembly and buffer catch for a firearm
A stock assembly for a firearm, the stock assembly comprising a buffer catch comprising a movable buffer catch body; a receiver extension comprising a buffer tube; the buffer tube comprising a buffer tube body and a tubular passage within the buffer tube body; the buffer tube body comprising a buffer catch receptacle extending through a wall of the buffer tube body extending along a longitudinal axis of the buffer tube; the buffer catch receptacle configured to receive the buffer catch body therein; the buffer catch body configured to move within the buffer catch receptacle from a home position to a depressed position; and, in the depressed position, the buffer catch body blocks at least a portion of the tubular passage of the buffer tube.
1. A stock assembly for a firearm, the stock assembly comprising:
a buffer catch comprising a movable buffer catch body;
a receiver extension comprising a buffer tube;
the buffer tube comprising a buffer tube body and a tubular passage within the buffer tube body;
the buffer tube body comprising a buffer catch receptacle extending through a wall of the buffer tube body extending along a longitudinal axis of the buffer tube;
the buffer catch receptacle configured to receive the buffer catch body therein;
the buffer catch body configured to move within the buffer catch receptacle from a home position to a depressed position;
in the depressed position, the buffer catch body blocks at least a portion of the tubular passage of the buffer tube;
a buffer configured to move within the tubular passage of the buffer tube;
the buffer comprising a front section, an intermediate section and a rear section; and
the intermediate section of the buffer providing an annular shoulder having a front face and a rear face.
2. The stock assembly of claim 1 , wherein:
the front section of the buffer is configured to reside within a bolt carrier of the firearm.
3. The stock assembly of claim 1 , wherein:
the front section of the buffer has a front section diameter;
the intermediate section of the buffer has an intermediate section diameter;
the rear section of the buffer has a rear section diameter;
the intermediate section diameter is larger than the rear section diameter; and
the rear section diameter is larger than the front section diameter.
4. The stock assembly of claim 1 , wherein:
the front face of the annular shoulder of the buffer has an annular recess;
the buffer catch body has a rear face configured to engage with the front face of the annular shoulder of the buffer;
the rear face of the buffer catch body has a protrusion; and
in the depressed position, the annular recess of the buffer is configured to receive the protrusion of the buffer catch body.
5. The stock assembly of claim 1 , wherein:
the buffer catch body is configured to move inward within the buffer catch receptacle from the home position to the depressed position, and vice-versa.
6. The stock assembly of claim 1 , further comprising:
a biasing member configured to bias depressing the buffer catch body from the home position to the depressed position.
7. The stock assembly of claim 1 , further comprising:
a retaining member configured to retain the buffer catch body in the buffer catch receptacle.
8. The stock assembly of claim 1 , wherein:
the stock assembly is configured to be installed on an M/16 AR-15 pattern firearm.
9. A stock assembly for a firearm, the stock assembly comprising:
a buffer catch comprising a movable buffer catch body;
a receiver extension comprising a buffer tube;
the buffer tube comprising a buffer tube body and a tubular passage within the buffer tube body;
the buffer tube body comprising a buffer catch receptacle extending through a wall of the buffer tube body extending along a longitudinal axis of the buffer tube;
the buffer catch receptacle configured to receive the buffer catch body therein;
the buffer catch body configured to move within the buffer catch receptacle from a home position to a depressed position;
in the depressed position, the buffer catch body blocks at least a portion of the tubular passage of the buffer tube;
a buffer configured to move within the tubular passage of the buffer tube;
the buffer comprises a front section, an intermediate section and a rear section;
the front section of the buffer having a front section diameter;
the intermediate section of the buffer having an intermediate section diameter;
the rear section of the buffer having a rear section diameter;
the intermediate section diameter larger than the rear section diameter; and
the rear section diameter larger than the front section diameter.
10. The stock assembly of claim 9 , wherein:
the front section of the buffer is configured to reside within a bolt carrier of the firearm.
11. The stock assembly of claim 9 , wherein:
the intermediate section of the buffer provides an annular shoulder having a front face and a rear face.
12. The stock assembly of claim 11 , wherein:
the front face of the annular shoulder of the buffer has an annular recess;
the buffer catch body has a rear face configured to engage with the front face of the annular shoulder of the buffer;
the rear face of the buffer catch body has a protrusion; and
in the depressed position, the annular recess of the buffer is configured to receive the protrusion of the buffer catch body.
13. The stock assembly of claim 9 , wherein:
the buffer catch body is configured to move inward within the buffer catch receptacle from the home position to the depressed position, and vice-versa.
14. The stock assembly of claim 9 , further comprising:
a biasing member configured to bias depressing the buffer catch body from the home position to the depressed position.
15. The stock assembly of claim 9 , further comprising:
a retaining member configured to retain the buffer catch body in the buffer catch receptacle.
16. The stock assembly of claim 9 , wherein:
the stock assembly is configured to be installed on an M/16 AR-15 pattern firearm.