# US 10,480,879 B2 · Automatic magazine ejection follower > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,480,879 B2 - Document ID: US10480879B2 - Status: Granted - Kind: B2 - Application number: 15/730,822 - Filed: 2017-10-12 - Published: 2019-02-14 - Granted: 2019-11-19 - Earliest claimed: 2017-08-14 - Assignees: Evolusion Concepts, Inc. - Applicants: Evolusion Concepts, Inc. - Inventors: Courtney Harris; Glenn Banaag; Jason Paik - Web page: https://patentgrep.com/patent/US10480879B2 ## CPC - F41A 9/70: Arrangements thereon for discharging, e.g. cartridge followers or discharge throats - F41A 3/66: Breech housings or frames; Receivers - F41A 9/59: Ejectors for clips or magazines, e.g. when empty - F41A 9/66: Arrangements thereon for charging, i.e. reloading (apparatus or tools for reloading of magazines F41A9/83) - F41A: FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE ## Abstract A follower for a firearm magazine comprising a top side shaped to support a cartridge and a lateral protrusion extending from the follower is disclosed. The lateral protrusion is disposed in an aperture in a wall of a magazine when the follower is disposed at a top position in the magazine. The follower may further comprise a front side disposed in a firing direction and connected to a front portion of top side and a rear side disposed in a rear direction and connected to a rear portion of the top side. The follower may have an elongated arm having a first end connected to the lateral protrusion and a second end connected to a portion of the follower. When the follower reaches the top of the magazine, the lateral protrusion pushes the magazine catch from the magazine and the magazine ejects from the lower receiver. ## Claims ### Claim 1 A follower for a firearm magazine comprising a) a top side shaped to support a cartridge; b) an internal cavity disposed below said top side; c) a flexible elongated arm integral to said follower and having a first end and a second end; i) wherein said first end has a lateral protrusion extending to a side of said follower, ii) wherein said second end is connected to an inner portion of said follower, wherein said inner portion of said follower is disposed below said top side of said follower; d) wherein said flexible elongated arm flexes between a first position and a second position; e) wherein when in said first position said lateral protrusion engages an internal side wall of said firearm magazine and said flexible elongated arm is disposed within said internal cavity; and f) wherein when in said second position said flexible elongated arm is disposed outside of said internal cavity and said lateral protrusion is disposed in an aperture in a wall of said firearm magazine when said follower is disposed at a top position in said magazine. ### Claim 2 (depends on 1) The follower as in claim 1 further comprising a) a front side disposed in a firing direction and connected to a front portion of said top side; and b) a rear side disposed in a rear direction and connected to a rear portion of said top side. ### Claim 3 (depends on 2) The follower as in claim 2 further comprising a bottom side connected to a bottom portion of said front side and connected to a bottom portion of said rear side. ### Claim 4 (depends on 3) The follower as in claim 3 further comprising a stop recess disposed in a top portion of said front side. ### Claim 5 (depends on 4) The follower as in claim 4 further comprising a rear protrusion extending from said rear side. ### Claim 6 (depends on 5) The follower as in claim 5 further comprising one or more vertically oriented side fins for engaging a rail in said firearm magazine. ### Claim 7 (depends on 6) The follower as in claim 6 further comprising a spacer disposed on a top surface of said top side. ### Claim 8 (depends on 2) The follower as in claim 2 further comprising a rear protrusion extending from said rear side. ### Claim 9 (depends on 2) The follower as in claim 2 further comprising a stop recess disposed in a top portion of said front side. ### Claim 10 (depends on 1) The follower as in claim 1 further comprising a spacer disposed on a top surface of said top side. ### Claim 11 (depends on 1) The follower as in claim 1 further comprising a hinge connected to said second end of said elongated arm and said inner portion of said follower. ### Claim 12 (depends on 1) The follower as in claim 1 further comprising a spring connected to said lateral protrusion. ### Claim 13 (depends on 1) The follower as in claim 1 further comprising one or more vertically oriented side fins for engaging a rail in said firearm magazine. ### Claim 14 A firearm comprising a) an upper receiver; b) a lower receiver having a magazine well; c) a magazine further comprising i) a side wall having a magazine catch aperture; ii) a follower disposed within an inner compartment of said magazine, said follower further comprising (1) a top side shaped to support a cartridge; (2) an internal cavity disposed below said top side; (3) a flexible elongated arm integral to said follower and having a first end and a second end; (a) wherein said first end has a lateral protrusion extending to a side of said follower, (b) wherein said second end is connected to an inner portion of said follower, wherein said inner portion of said follower is disposed below said top side of said follower; (4) wherein said flexible elongated arm flexes between a first position and a second position; (5) wherein when in said first position said lateral protrusion engages an internal side wall of said firearm magazine and said flexible elongated arm is disposed within said internal cavity; and (6) wherein when in said second position said flexible elongated arm is disposed outside of said internal cavity and said lateral protrusion is disposed in an aperture in a wall of said firearm magazine when said follower is disposed at a top position in said magazine. ### Claim 15 A method for loading a magazine into a firearm comprising a) inserting a first magazine into a magazine well of a lower receiver i) wherein said first magazine comprises (1) a side wall having a magazine catch aperture; (2) one or more cartridges for firing from said firearm; (3) a follower disposed within an inner compartment of said magazine, said follower further comprising (a) a top side shaped to support a cartridge; (b) an internal cavity disposed below said top side; (c) a flexible elongated arm integral to said follower and having a first end and a second end; (i) wherein said first end has a lateral protrusion extending to a side of said follower, (ii) wherein said second end is connected to an inner portion of said follower, wherein said inner portion of said follower is disposed below said top side of said follower; (d) wherein said flexible elongated arm flexes between a first position and a second position; (e) wherein when in said first position said lateral protrusion engages an internal side wall of said firearm magazine and said flexible elongated arm is disposed within said internal cavity; and (f) wherein when in said second position said flexible elongated arm is disposed outside of said internal cavity and said lateral protrusion is disposed in an aperture in a wall of said firearm magazine when said follower is disposed at a top position in said magazine. ### Claim 16 (depends on 15) The method as in claim 15 further comprising a) firing a firearm until all cartridges are removed from said first magazine; b) whereby when all cartridges are removed from said magazine said lateral protrusion enters said magazine catch aperture with sufficient force to remove a magazine catch bar residing in said magazine catch aperture and cause said magazine to fall out of said magazine well. ### Claim 17 (depends on 16) The method as in claim 16 further comprising inserting a second magazine into said magazine well of said lower receiver.