Mount assembly for a firearm
A firearm or firearm retrofit assembly may include a compensation assembly to receive gas expelled from a muzzle of a barrel or an egress in a length of the barrel. The compensation assembly may include one or more gas flow-directing sections to tune the flow of gas through the compensation assembly, which may reduce recoil. Other embodiments may be disclosed and/or claimed.
1 . An apparatus, comprising:
a threaded or non-threaded barrel, wherein an exterior surface of the barrel includes a cylindrical portion or another portion, and a non-cylindrical portion or a recess;
at least one body including one or more gas ports to redirect, or vent, gas output from the barrel; and
the at least one body including an opening to receive at least one part, the at least one body configured to guide a portion of a length of the at least one part against the non-cylindrical portion or the recess when said at least one part is 1) linearly inserted into the opening in the at least one body, and 2) is then driven axially, using a rotatable drive interface, into a binding engagement with at least one surface of the non-cylindrical portion or the recess, the binding engagement to persist until released by a user during an uninstallation of the at least one part;
the at least one part to orient the one or more gas ports with the barrel, the orientation including 1) restriction of a rotational orientation of the one or more gas ports relative to the barrel or 2) restriction of fore/aft positioning of the one or more gas ports relative to the barrel.
2 . The apparatus of claim 1 , wherein the exterior surface of the barrel includes the recess, the recess comprising a groove.
3 . The apparatus of claim 2 , wherein the groove comprises a linear groove, an axis of which is non-parallel with a bore axis of the barrel.
4 . The apparatus of claim 2 , wherein the groove is defined by at least three different surfaces, one of which comprises a bottom surface of the groove;
wherein said at least one surface comprises one or more surfaces of the at least three different surfaces.
5 . The apparatus of claim 2 , wherein the groove is defined by at least two surfaces having a coinciding edge, wherein the coinciding edge comprises a bottommost part of the groove;
wherein said at least one surface comprises a portion of each surface of the at least two surfaces.
6 . The apparatus of claim 1 , wherein the exterior surface of the barrel includes the recess, wherein the recess is defined by two or more surfaces having at least one coinciding edge, wherein the at least one coinciding edge is non-parallel with a bore axis of the barrel;
wherein said at least one surface comprises a portion of each surface of the two or more surfaces.
7 . The apparatus of claim 1 , wherein the at least one part comprises a single linearly drivable part.
8 . The apparatus of claim 7 , wherein the single linearly drivable part is drivable on an axis that is perpendicular with, or parallel with, a bore axis of the barrel.
9 . The apparatus of claim 1 , wherein the at least one part includes a rotatable part.
10 . The apparatus of claim 9 , wherein an axis of rotation of the rotatable part is perpendicular with, or parallel with, a bore axis of the barrel.
11 . The apparatus of claim 10 , wherein the rotatable part comprises a rotatably drivable part.
12 . The apparatus of claim 11 , wherein the rotatably drivable part is configured to engage the at least one surface.
13 . The apparatus of claim 1 , wherein the exterior surface of the barrel includes at least one flat face, and wherein the at least one part includes a part with an axis, and with a circular cross section, taken perpendicular to said axis, in which a curved face corresponding to the circular cross section contacts the at least one flat face when the at least one part is installed.
14 . The apparatus of claim 1 , wherein the at least one part includes a linearly or rotatably drivable part, and 1) a portion of the linearly or rotatably drivable part, or 2) the opening, is located forwardly of a vertical plane, the vertical plane perpendicular with a bore axis of the barrel, the vertical plane coincident with a rearmost portion of the one or more gas ports.
15 . The apparatus of claim 1 , wherein the at least one body exposes the rotational drive interface.
16 . The apparatus of claim 15 , wherein the at least one part comprises a rotationally driven part, wherein the rotationally driven part includes a head end or another end, wherein the exposed rotational drive interface is part of the head end or the other end of the rotationally driven part.
17 . The apparatus of claim 1 , wherein the at least one part includes at least one feature to produce counter force to resist post-installation loosening and preserve the binding engagement.
18 . The apparatus of claim 1 , wherein the at least one part comprises a self-retaining part.
19 . The apparatus of claim 1 , wherein the rotatable drive interface is located on a terminal end of the at least one part.
20 . The apparatus of claim 1 , wherein the one or more gas ports redirect, or vent, the output gas into the atmosphere.
21 . An apparatus, comprising:
a barrel with an exterior having at least one discontinuity thereon;
at least one body including one or more gas ports to redirect, or vent, gas output from the barrel; and
the at least one body including an opening to receive at least one part, the at least one body configured to guide a portion of a length of the at least one part against the at least one discontinuity when said at least one part is 1) linearly inserted into the opening in the at least one body, and 2) is then driven axially, using a rotatable drive interface, into a binding engagement with at least one surface of the at least one discontinuity non-cylindrical portion or recess, the binding engagement to persist until released by a user during an uninstallation of the at least one part; and
the at least one part to orient the one or more gas ports with the barrel, the orientation including 1) restriction of a rotational orientation of the one or more gas ports relative to the barrel or 2) restriction of fore/aft positioning of the one or more gas ports relative to the barrel.
22 . The apparatus of claim 21 , wherein the exterior of the barrel has a forward section and an additional section located rearwardly of the forward section, wherein the at least one discontinuity on the exterior of the barrel comprises one or more faces located exclusively in the forward section of the exterior of the barrel, wherein the one or more faces include the at least one surface.
23 . An apparatus usable with a barrel, in which the barrel includes at least one discontinuity on an exterior of the barrel, the apparatus comprising:
a part comprising at least one body, the at least one body including one or more gas ports to redirect, or vent, gas output from the barrel; and
at least one additional part to couple the at least one body to the barrel and orient the one or more gas ports with the barrel;
the at least one body including an opening to receive the at least one additional part, the at least one body configured to guide a non-threaded portion of a length of the at least one additional part against at least one surface of the at least one discontinuity when 1) said non-threaded portion of the length of the at least one additional part is linearly inserted into the opening in the at least one body, and 2) a rotatable drive interface is utilized to drive the non-threaded portion of the length of the at least one additional part into a binding engagement with the at least one surface, the binding engagement to persist until released by a user during an uninstallation of the at least one additional part.
24 . The apparatus of claim 23 , in which:
a portion of the at least one additional part is located forwardly of a vertical plane perpendicular with a bore axis of the barrel, the vertical plane coincident with a rearmost portion of the one or more gas ports,
the orientation including restriction of a rotational orientation of the one or more gas ports relative to the barrel or restriction of fore/aft positioning of the one or more gas ports relative to the barrel.
25 . The apparatus of claim 23 , wherein when the part is coupled to the barrel the non-threaded portion of the additional part is in a linear groove in the exterior of the barrel, wherein a center axis of the at least one additional part is non-parallel with a bore axis of the barrel.
26 . The apparatus of claim 23 , wherein when the part is coupled to the barrel the non-threaded portion of the at least one additional part is in contact with two faces of the exterior of the barrel.
27 . A kit of parts comprising the apparatus of claim 23 and said barrel, the at least one discontinuity comprising at least two faces have a coinciding edge, wherein the coinciding edge comprises a bottommost part of a recess in the exterior of the barrel, wherein the at least one discontinuity comprises the recess, wherein the coinciding edge is non-parallel with a bore axis of the barrel.
28 . The apparatus of claim 23 wherein the at least one additional part comprises a rotatable part;
wherein an axis of rotation of the rotatable part is perpendicular with, or parallel with, a bore axis of the barrel; and
wherein the rotatable part is configured to contact the at least one surface.
29 . The apparatus of claim 23 , wherein the at least one additional part comprises a part with:
an axis, and
a circular cross section, taken perpendicular to said axis of the part.
30 . The apparatus of claim 23 , wherein when the part is coupled to the barrel the non-threaded portion of the at least one additional part is in a recess in the exterior of the barrel, the at least one additional part to contact the at least one surface in two non-contiguous areas thereof.