Barrel mounting and retention mechanism

A barrel mounting and retention device for attaching a barrel to a receiver of a firearm, comprising:

• a barrel extension disposed at a proximal end of the barrel, the barrel defining a first axial bore at least partially extending its proximal end;
• an annular collar extending from the barrel extension and comprising a first clamp face about the first axial bore, at least a portion of the first clamp face comprising a first oblique portion extending in an oblique direction with respect to a longitudinal axis of the barrel;
• and
• a mounting plate comprising a second clamp face and defining a second axial bore, the barrel extending at least partially through the second axial bore, at least a portion of the second clamp face comprising a second oblique portion extending in an oblique direction with respect to the longitudinal axis of the barrel, and wherein the mounting plate comprises a plurality of bores disposed in a pattern coaxial with the first axial bore;
• wherein at least a portion of the second oblique portion engages at least a portion of the first oblique portion as the mounting plate and annular collar are moved into engagement so as to adjust a position of the mounting plate so that as the mounting plate is moved toward the receiver, a clamping force applied against the barrel extension is aligned with a central axis of the barrel of the firearm.

A barrel mounting and retention device for attaching a barrel to a receiver of a firearm, comprising:

• a barrel extension disposed at a proximal end of the barrel and defining an axial bore at least partially extending therethrough;
• an annular collar extending from the barrel extension and comprising a first clamp face formed about the axial bore at a forward end of the annular collar, at least a portion of the first clamp face comprising a first spherical surface;
• and
• a mounting plate movable into engagement with the annular collar of the barrel extension and defining a second axial bore through which the barrel extends, the mounting plate having a second clamp face comprising a second spherical surface formed about the second axial bore;
• wherein at least a portion of the second spherical surface cooperatively engages at least a portion of the first spherical surface as the mounting plate and annular collar are moved into engagement so as to adjust a position of the mounting plate with respect to the annular collar so that as the mounting plate is moved toward the receiver, the second axial bore of the mounting plate is substantially located in alignment with the axial bore of the barrel extension and a clamping force applied against the barrel extension substantially is aligned with a central axis of the barrel of the firearm.

A barrel mounting and retention device for attaching a barrel to a receiver of a firearm, comprising:

• a barrel extension disposed at a proximal end of the barrel, and having a first axial bore at least partially extending therealong;
• an annular collar formed at a forward end of the barrel extension, the annular collar comprising a flange defining a through-bore, and a first clamp face extending about the first axial bore, at least a portion of the first clamp face comprising a first oblique portion extending in an oblique direction with respect to a longitudinal axis of the barrel;
• and
• a mounting plate defining a second axial bore through which the barrel is received and comprising a flange having a clearance bore adapted to be aligned with the through-bore of the annular collar for receiving an operating rod of the firearm therethrough, and a second clamp face, at least a portion of the second clamp face comprising a second oblique portion extending in an oblique direction with respect to the longitudinal axis of the barrel;
• wherein at least a portion of the second oblique portion engages at least a portion of the first oblique portion as the mounting plate and annular collar are moved into engagement to adjust a position of the mounting plate so that as the mounting plate is moved toward the receiver a clamping force applied against the barrel extension is substantially aligned with a central axis of the barrel of the firearm.