Deformable spacer for firearms

A spacer for coupling a muzzle device to a muzzle of a barrel of a firearm, the spacer comprising:

• an annular body having:
• an inner portion having an inner wall defining a central opening and a central axis;
• a barrel engaging portion extending radially away from the inner portion and the central axis;
• and
• a muzzle device engaging portion extending radially away from the inner portion and the central axis, wherein a channel is defined between the barrel engaging portion and the muzzle device engaging portion, the channel being sized such that a compressive force applied to the annular body via the barrel engaging portion and the muzzle device engaging portion reduces an axial width of the channel.

A spacer for coupling a muzzle device to a muzzle of a barrel of a firearm, the spacer comprising:

• an annular body having:
• an inner portion having an inner wall defining a central opening and a central axis, the inner portion having an inner thickness as measured at the inner wall as measured parallel to the central axis;
• an outer portion extending radially outward from the inner portion, the outer portion having a barrel engaging surface and a muzzle device engaging surface, the outer portion having an outer thickness as measured between the barrel engaging surface and the muzzle engaging surface parallel to the central axis;
• wherein a channel is defined between the barrel engaging surface and the muzzle device engaging surface;
• wherein the outer thickness is greater than the inner thickness.