LOW-PROFILE ADAPTER ASSEMBLY FOR FIREARM ACCESSORIES

1 . A system, comprising:

an adapter having an outermost diameter less than or equivalent to an outermost diameter of a firearm barrel, the adapter comprising:

a first attachment portion configured to attach to the firearm barrel; and

a second attachment portion configured to attach to a firearm accessory.

2 . The system of claim 1 , wherein the second attachment portion of the adapter comprises a plurality of channels.

3 . The system of claim 1 , wherein the second attachment portion of the adapter comprises a plurality of lugs.

4 . The system of claim 1 , wherein the second attachment comprises a plurality of guides, one or more stops, and a plurality of channels adjacent to the one or more stops.

5 . The system of claim 4 , wherein:

a first guide of the plurality of guides is configured to:

cause a locking component in an attachment portion of the firearm accessory to rotate within outer boundaries of a stop of the one or more stops when the attachment portion of the firearm accessory is guided through a channel of the plurality of channels and brought into contact with the first guide; and

cause, based at least in part on rotation of the locking component, the locking component to interface with the stop of the one or more stops when the firearm accessory is subsequently released.

6 . The system of claim 1 , further comprising the firearm accessory, wherein the firearm accessory comprises:

an elongate body;

a spring;

a first element configured to retain the spring and to remain at a fixed position; and

a second element configured to retain the spring and to move axially within the firearm accessory to compress the spring when the adapter is coupled with the firearm accessory.

7 . The system of claim 6 , wherein an alignment portion of the firearm accessory is configured to envelop the adapter and a portion of the firearm barrel.

8 . The system of claim 6 , wherein an attachment portion of the firearm accessory is configured to attach to the second attachment portion of the adapter, the attachment portion of the firearm accessory comprising a retention portion configured to retain the second element of the firearm accessory and to retain the adapter when the adapter is attached to the firearm accessory.

9 . The system of claim 6 , wherein an exterior surface of the first element of the firearm accessory is threaded and configured to interface with threads on an interior surface of the elongate body.

10 . The system of claim 6 , wherein a first portion of the second element of the firearm accessory comprises:

an annular angled surface configured to interface with an annular angled surface of the adapter, and

an annular surface configured to interface with an interior of the firearm accessory.

11 . The system of claim 10 , wherein:

a second portion of the second element of the firearm accessory comprises a second annular surface configured to interface with an interior of the firearm accessory, and

one or more grooves are formed in the second annular surface.

12 . The system of claim 11 , wherein the firearm accessory further comprises:

one or more O-shaped seals positioned in the one or more grooves and configured to form a seal between the second element of the firearm accessory and an interior surface of the elongate body.

13 . A system, comprising:

a firearm barrel comprising a primary portion and an attachment portion, the attachment portion having an outermost diameter less than or equivalent to an outermost diameter of the primary portion and comprising a plurality of channels.

14 . The system of claim 13 , further comprising a firearm accessory attachable to the attachment portion of the firearm barrel, wherein the firearm accessory comprises:

a spring;

a first element configured to retain the spring and to remain at a fixed position; and

a second element configured to retain the spring and to move axially within the firearm accessory to compress the spring when the attachment portion of the firearm barrel is coupled with the firearm accessory.

15 . The system of claim 14 , wherein the firearm accessory further comprises an alignment portion configured to envelop the attachment portion of the firearm barrel.

16 . The system of claim 14 , wherein the firearm accessory further comprises an accessory attachment portion configured to attach to the attachment portion of the firearm barrel, the accessory attachment portion comprising a retention portion configured to retain the second element of the firearm accessory and to retain the attachment portion of the firearm barrel when the attachment portion of the firearm barrel is attached to the firearm accessory.

17 . A system, comprising:

a firearm accessory comprising an elongate body having an adapter attachment portion, a spring, a fixed first element configured to retain the spring, and a second element; and

an adapter comprising a first attachment portion for securing the adapter to a firearm barrel, and a second attachment portion for securing the adapter to the adapter attachment portion of the elongate body;

wherein:

the second element of the firearm accessory is configured to retain the spring and to move axially within the elongate body to compress the spring when the adapter is coupled with the firearm accessory; and

the second element is configured to attach to the second attachment portion of the adapter when the adapter is coupled with the firearm accessory.

18 . The system of claim 17 , wherein an outermost diameter of the adapter is less than or equivalent to an outermost diameter of the firearm barrel.

19 . The system of claim 17 , wherein a first portion of the second element of the firearm accessory comprises a groove configured to receive one or more retention lugs on the second attachment portion of the adapter.

20 . The system of claim 17 , wherein a first portion of the second element of the firearm accessory comprises one or more channels configured to receive one or more indexing lugs on the adapter attachment portion.