Firearm sound suppressor

1. A sound suppressor for a firearm, the sound suppressor comprising:

a housing extending along, and disposed about, an axis;

a first sleeve concentrically disposed within the housing and defining a plurality of first apertures and a plurality of undulations disposed about a central axis of the first sleeve, each undulation extending parallel to an adjacent undulation; and

a second sleeve concentrically disposed within the first sleeve and defining a plurality of second apertures.

2. A sound suppressor for a firearm, the sound suppressor comprising:

a housing defining a first central passage;

a first sleeve disposed within the first central passage and defining (i) a second central passage, (ii) a plurality of first apertures providing fluid communication between the first central passage and the second central passage, and (iii) a plurality of undulations disposed about a central axis of the first sleeve, each undulation extending parallel to an adjacent undulation; and

a second sleeve disposed within the second central passage and defining a third central passage and a plurality of second apertures providing fluid communication between the second central passage and the third central passage.

3. A sound suppressor for a firearm, the sound suppressor comprising:

a housing;

a first sleeve disposed within the housing and having a first inner surface and a first outer surface, the first sleeve defining (i) a plurality of first apertures extending through the first inner surface and the first outer surface and (ii) a plurality of undulations disposed about a central axis of the first sleeve, each undulation extending parallel to an adjacent undulation; and

a second sleeve disposed within the first sleeve and having a second inner surface and a second outer surface, the second sleeve defining a plurality of second apertures extending through the second inner surface and the second outer surface.

4. The sound suppressor of claim 1 :

wherein a first aperture of the plurality of first apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of first apertures extends in a second direction, transverse to the first direction, through a thickness of the first sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.

5. The sound suppressor of claim 1 :

wherein a first aperture of the plurality of second apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of second apertures extends in a second direction, transverse to the first direction, through a thickness of the second sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.

6. The sound suppressor of claim 2 :

wherein a first aperture of the plurality of first apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of first apertures extends in a second direction, transverse to the first direction, through a thickness of the first sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.

7. The sound suppressor of claim 2 :

wherein a first aperture of the plurality of second apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of second apertures extends in a second direction, transverse to the first direction, through a thickness of the second sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.

8. The sound suppressor of claim 3 :

wherein a first aperture of the plurality of first apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of first apertures extends in a second direction, transverse to the first direction, through a thickness of the first sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.

9. The sound suppressor of claim 3 :

wherein a first aperture of the plurality of second apertures defines a first maximum dimension extending in a first direction across the first aperture,

wherein the first aperture of the plurality of second apertures extends in a second direction, transverse to the first direction, through a thickness of the second sleeve, and

wherein the thickness is greater than one hundred percent of the first maximum dimension.