Ammunition magazine and follower
The present disclosure provides ammunition magazines and followers for use in a firearm, such as an AR15 or M16 firearm, that prevent contact between the bullet portion of a cartridge and interior surfaces of the firearm's receiver portion during transfer of the cartridge from the magazine to the firearm's chamber.
1. A single stack ammunition magazine comprising: a magazine housing base including:
a left-hand feed ramp insert,
a left-hand feed lip insert including a plurality of tabs, and
a plurality of key seat slotted pockets configured to slidably mate with the tabs of the left-hand feed lip insert;
a removable plate including:
a right-hand feed ramp insert,
a right-hand feed lip insert including a plurality of tabs, has and
a plurality of key seat slotted pockets to slidably mate with the tabs of the right-hand feed lip insert;
a magazine spring disposed within a magazine housing defined by the magazine housing base and the removable plate; and
a magazine follower disposed at a top end of the magazine spring, wherein the right-hand feed ramp insert and the left-hand ramp insert are each configured to guide a cartridge including a bullet portion from the magazine housing into a barrel extension without the bullet portion contacting an interior surface of the barrel extension.
2. The single stack ammunition magazine of claim 1 , wherein the base has key seat slotted pockets to accept corresponding tabs of a left-hand feed lip insert allowing up and down movement of the left-hand feed lip insert.
3. The single stack ammunition magazine of claim 2 , wherein the left-hand feed lip comprises an elastic material.
4. The single stack ammunition magazine of claim 1 , wherein the key seat slotted pockets are configured to cooperate with the tabs of the right-hand feed lip insert to enable up-and-down movement of the right-hand feed lip insert within the magazine housing.
5. The single stack ammunition magazine of claim 4 , wherein the right-hand feed lip insert comprise an elastic material.
6. The single stack ammunition magazine of claim 1 wherein the magazine follower comprises a top surface including a cartridge-shaped protrusion and a ramp disposed adjacent to the cartridge-shaped protrusion.
7. A double stack ammunition magazine comprising:
a magazine housing base having an integrated left-hand feed ramp insert;
a removable magazine box plate having an integrated right-hand feed ramp insert;
a magazine spring disposed within a magazine housing defined by the magazine housing base and the removable magazine box plate; and
a magazine follower disposed at a top end of the magazine spring, wherein the right-hand feed ramp insert and the left-hand ramp insert are each configured to guide a cartridge including a bullet portion from the magazine housing into a barrel extension without the bullet portion contacting an interior surface of the barrel extension.
8. The ammunition magazine of claim 7 , wherein the ramp is configured to enable a cartridge to be fed from the ammunition magazine to a chamber of an upper receiver of a firearm without enabling a bullet portion of the cartridge to contact a feed ramp of the upper receiver.
9. The double stack ammunition magazine of claim 7 , wherein the right-hand feed ramp insert and the left-hand feed ramp insert each contact a shoulder of the cartridge to guide the cartridge into a chamber without enabling a bullet portion of the cartridge to contact an inner surface of the chamber.
10. The double stack ammunition magazine of claim 7 , wherein the barrel extension includes a right-hand loading slot and a left-hand loading slot configured to guide a cartridge from the magazine into a chamber.
11. The double stack ammunition magazine of claim 7 , wherein the left-hand feed ramp insert is configured to contact a shoulder of a cartridge, but not a bullet portion of the cartridge, upon the cartridge being advanced towards the barrel extension by a bolt.
12. The double stack ammunition magazine of claim 7 , wherein the right-hand feed ramp insert is configured to contact a shoulder of a cartridge, but not a bullet portion of the cartridge, upon the cartridge being advanced towards the barrel extension by a bolt.
13. The magazine of claim 1 , wherein the cartridge has a common bottle-neck design including a shoulder.
14. The magazine of claim 12 wherein the cartridge has a common bottle-neck design including a shoulder.