Firearm having an indirect gas impingement system
First Claim
1. A firearm comprising:
- a barrel defining a first bore extending along a longitudinal axis and having a breech and a muzzle defining a length of said barrel;
a hand guard defining a second bore extending substantially parallel to said longitudinal axis and having a first end coupled to said breech and a second end spaced from said first end along said longitudinal axis toward said muzzle;
a housing coupled to said second end of said hand guard and defining a chamber extending along a piston axis;
a piston disposed within said chamber of said housing and movable along said piston axis between a static position and a displaced position;
a receiver coupled to said first end of said hand guard and said breech of said barrel with said receiver defining a third bore extending substantially parallel to said longitudinal axis;
a bolt carrier disposed in said third bore of said receiver and moveable relative to said receiver along said longitudinal axis between a firing position and a rearward position;
a carrier key attached to said bolt carrier and moving concurrently with said bolt carrier between said firing and rearward positions with said carrier key extending outwardly above said bolt carrier and along said piston axis; and
a rod permanently affixed to said carrier key and extending along said piston axis to a distal end with said piston adjacent said distal end when in said static position and said piston engaging said distal end when moving to said displaced position for moving said bolt carrier from said firing position to said rearward position.
2 Assignments
0 Petitions
Accused Products
Abstract
A firearm including a barrel having a breech and a muzzle defining a length of the barrel is disclosed. The firearm includes a hand guard having a first end and a second end with a front sight is attached to at least one of the barrel adjacent the muzzle and the second end of the hand guard. A housing is coupled to the front sight and defines a chamber having a piston disposed therein and movable between static and displaced positions. A receiver is coupled to the first end and a bolt carrier is disposed within the receiver and moveable between firing and rearward positions. A carrier key is attached to the bolt carrier and moves concurrently with the bolt carrier and a rod is permanently affixed to the carrier key and extends to a distal end with the piston engaging the distal end when moving to the displaced position.
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Citations
21 Claims
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1. A firearm comprising:
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a barrel defining a first bore extending along a longitudinal axis and having a breech and a muzzle defining a length of said barrel; a hand guard defining a second bore extending substantially parallel to said longitudinal axis and having a first end coupled to said breech and a second end spaced from said first end along said longitudinal axis toward said muzzle; a housing coupled to said second end of said hand guard and defining a chamber extending along a piston axis; a piston disposed within said chamber of said housing and movable along said piston axis between a static position and a displaced position; a receiver coupled to said first end of said hand guard and said breech of said barrel with said receiver defining a third bore extending substantially parallel to said longitudinal axis; a bolt carrier disposed in said third bore of said receiver and moveable relative to said receiver along said longitudinal axis between a firing position and a rearward position; a carrier key attached to said bolt carrier and moving concurrently with said bolt carrier between said firing and rearward positions with said carrier key extending outwardly above said bolt carrier and along said piston axis; and a rod permanently affixed to said carrier key and extending along said piston axis to a distal end with said piston adjacent said distal end when in said static position and said piston engaging said distal end when moving to said displaced position for moving said bolt carrier from said firing position to said rearward position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification