Modular buttstock interface cap
An end cap for a weapon can include a sub-frame, a body, and a rail. The end cap is a modular buttstock interface cap (MBIC) with a NATO STANAG 4694 or MIL-STD-1913 (Picatinny) rail interface that provides interchangeability between braces, stocks, and other accessories for weapon systems, including weapons with recoil buffer systems within the weapon's receiver. The MBIC can be a three-dimensional-printed structure.
1. A modular buttstock interface cap for use with a weapon, the modular buttstock interface cap comprising:
a sub-frame;
a body entirely surrounding the sub-frame; and
a rail attached to the body, wherein
a portion of the sub-frame is configured to fit over a portion of the weapon.
2. The modular buttstock interface cap of claim 1 , further comprising:
a socket configured to attach and detach weapon components.
3. The modular buttstock interface cap of claim 1 , wherein the rail is compatible with an interface defined in NATO STANAG 4694.
4. The modular buttstock interface cap of claim 1 , wherein the modular buttstock interface cap is a one-piece three-dimensional-printed structure.
5. The modular buttstock interface cap of claim 4 , further comprising a mounting hole on a side of the body, in which an axis of the mounting hole is in a direction substantially perpendicular to a longitudinal axis of a barrel of the weapon, and used to mount the modular buttstock interface cap to the weapon.
6. A weapon including the modular buttstock interface cap of claim 1 .
7. The weapon of claim 6 , wherein the rail is vertically oriented with respect to the weapon.
8. The modular buttstock interface cap of claim 1 , wherein the portion of the weapon is a receiver.
9. The modular buttstock interface cap of claim 1 , wherein the body is over-molded to the sub-frame.
10. A modular buttstock interface cap for use with a weapon, the modular buttstock interface cap comprising:
a sub-frame;
a body; and
a rail, wherein
the modular buttstock interface cap is one-piece and includes no joints, no seams, or any formerly separate pieces within the body, the rail, and the sub-frame, and
the body includes a cavity to surround a portion of the weapon.
11. The modular buttstock interface cap of claim 10 , wherein the modular buttstock interface cap is a three-dimensional-printed structure.
12. The modular buttstock interface cap of claim 11 , further comprising a mounting hole on a side of the body, in which an axis of the mounting hole is in a direction substantially perpendicular to a longitudinal axis of a barrel of the weapon, and used to mount the modular buttstock interface cap to the weapon.
13. The modular buttstock interface cap of claim 10 , wherein the portion of the weapon is a receiver.
14. A weapon including a modular buttstock interface cap, wherein
the modular buttstock interface cap includes:
a sub-frame;
a body; and
a rail, and
the modular buttstock interface cap is one-piece and includes no joints, no seams, or any formerly separate pieces within the body, the rail, and the sub-frame, and
the body includes a cavity that surrounds a portion of the weapon.
15. The weapon of claim 14 , further comprising a buttstock attached to the modular buttstock interface cap.
16. The weapon of claim 14 , wherein the modular buttstock interface cap is a three-dimensional-printed structure.
17. The weapon of claim 14 , wherein the portion of the weapon is a receiver.
18. The weapon of claim 14 , further comprising a mounting hole on a side of the body, in which an axis of the mounting hole is in a direction substantially perpendicular to a longitudinal axis of a barrel of the weapon, and used to mount the modular buttstock interface cap to the weapon.