Charging handle for sub-caliber upper receiver actions

1. A charging handle for an upper receiver of a firearm, the charging handle comprising:

an elongated stem;

a bolt hook disposed at a distal end of the elongated stem;

a head disposed at a proximal end of the elongated stem:

at least one latch disposed in a seating aperture of the head; and

a stabilizer disposed on at least a portion of the elongated, wherein the stabilizer extends below a bottom surface of the elongated stem.

2. The charging handle of claim 1 , wherein the stabilizer comprises a first lateral portion and a second lateral portion.

3. A charging handle for an upper receiver of a firearm, the charging handle comprising:

an elongated stem;

a bolt hook disposed at a distal end of the elongated stem;

a head disposed at a proximal end of the elongated stem;

at least one latch disposed in a seating aperture of the head; and

a stabilizer disposed on at least a portion of the elongated stem;

wherein the stabilizer comprises a first lateral portion and a second lateral portion, and wherein the first lateral portion is configured to slidably mate with a first spring channel of an upper receiver, and wherein the second lateral portion is configured to mate with a second spring channel of the upper receiver.

4. The charging handle of claim 1 further comprising first and second wing projections each extending laterally from the first and second sides of the elongated stem.

5. The charging handle of claim 1 , wherein the bolt hook does not include an aperture for a gas tube.

6. The charging handle of claim 1 , wherein the bolt hook includes a concave surface for contacting a portion of a bolt carrier group.

7. The charging handle of claim 1 further comprising first and second chamfers disposed along the top surface of the elongated stem.