Perforating gun

1. An apparatus for a perforating gun, the apparatus comprising:

a conductor housing, defining:

recess; and

an internal bore extending through the conductor housing from the recess;

a charge cartridge defining opposing first and second end portions, the charge cartridge comprising a first cap assembly at the first end portion; and

an annular body;

wherein the conductor housing is at least partially received into a carrier tube in which the charge cartridge extends;

wherein the recess at least partially receives the first end portion of the charge cartridge including the first cap assembly;

and

wherein the annular body radially supports the charge cartridge, during rotational movement of the charge cartridge or otherwise, at a position between the first cap assembly and the second end portion.

2. The apparatus of claim 1 , further comprising:

a conductor body extending through the internal bore of the conductor housing;

wherein a portion of the conductor body extends within the recess; and

wherein the conductor body is adapted to facilitate detonation of one or more charges extending within.

3. The apparatus of claim 2 , wherein the charge cartridge further comprises a charge tube; and

wherein the first cap assembly is operably coupled to the charge tube and adapted to further facilitate detonation of the one or more perforating charges extending within the charge cartridge.

4. The apparatus of claim 3 , wherein the annular body radially supports the charge tube, during rotational movement of the charge cartridge or otherwise, between the first cap assembly and the second end portion.

5. The apparatus of claim 1 , further comprising the carrier tube in which the charge cartridge extends.

6. The apparatus of claim 5 , wherein the annular body defines an external surface radially adjacent, or at least proximate, an interior surface of the carrier tube.

7. The apparatus of claim 1 , wherein the conductor housing is or includes a sub body defining:

a third end portion received into the carrier tube, into which third end portion the first recess is formed; and

a fourth end portion received into another carrier tube.

8. The apparatus of claim 1 , wherein the charge cartridge further comprises a second cap assembly at the second end portion; and

wherein the annular body radially supports the charge cartridge, during rotational movement of the charge cartridge or otherwise, between the first cap assembly and the second cap assembly.

9. The apparatus of claim 1 , wherein the annular body extends entirely outside the recess defined in the conductor housing.