Magazine base pad assembly and magazine extension assembly

Abstract

Some embodiments may include a firearm magazine base pad assembly or magazine extension assembly comprising a top, a bottom, and a cavity between the top and bottom, the cavity for a core or removable insert, the firearm magazine base pad assembly or magazine extension assembly further comprising: means for slidingly receiving a bottom of a magazine, the slidingly receiving means including a channel to receive a lip defined by the bottom of the magazine and tab slots to mate with tabs above the lip; and the core or removable insert located in the cavity. Other embodiments may be disclosed and/or claimed.

1 . An apparatus, comprising:
 a firearm magazine base pad assembly or magazine extension assembly comprising a top to receive a bottom of a magazine body, a bottom, and a cavity between the top and bottom, the cavity for a core or removable insert, the firearm magazine base pad assembly or magazine extension assembly further comprising:
 means for slidingly receiving the bottom of the magazine body, the slidingly receiving means located above the cavity and including a channel to receive a lip defined by the bottom of the magazine body and tab slots to mate with tabs above the lip; and 
 the core or removable insert located in the cavity, wherein the core is overmolded, or wherein:
 the removable insert forms part of a bottom of the magazine base pad assembly or magazine extension assembly, exposed by a toolless-access window, or 
 the removable insert is retained using a spring force generated by a different spring than a magazine feed spring. 
 
   
     
     
         2 . The apparatus of  claim 1 , wherein the core comprises a metal core and the slidingly receiving means comprises polymer. 
     
     
         3 . The apparatus of  claim 1 , wherein an interior of the firearm magazine base pad assembly or magazine extension assembly defining the cavity is integrally formed onto the core. 
     
     
         4 . The apparatus of  claim 1 , wherein the removable insert is retained in the magazine body therein using at least one spring. 
     
     
         5 . The apparatus of  claim 4 , wherein the at least one spring comprises the magazine feed spring. 
     
     
         6 . The apparatus of  claim 4 , wherein the at least one spring comprises a retention spring located within the firearm magazine base pad assembly or magazine extension assembly. 
     
     
         7 . The apparatus of  claim 1 , wherein the core or removable insert comprises a planar core or planar insert having a bottom planar side and a top planar side. 
     
     
         8 . The apparatus of  claim 1 , wherein a top of the firearm magazine base pad assembly or magazine extension assembly is arranged to mate with a bottom of a retaining plate of the magazine;
 the top of the firearm magazine base pad assembly or magazine extension assembly including a hole to receive a post on the bottom of the retaining plate, the bottom of the firearm magazine base pad assembly or magazine extension assembly including a tool opening to access a top of the post.   
     
     
         9 . The apparatus of  claim 8 , wherein a top side of the core or removable insert is arranged to mate with the bottom of the retaining plate, wherein the top side of core or removable insert defines the hole. 
     
     
         10 . The apparatus of  claim 1 , wherein the bottom of the firearm magazine base pad assembly or magazine extension assembly includes a window exposing at least part of the bottom of the core or removable insert. 
     
     
         11 . The apparatus of  claim 1 , wherein the magazine extension assembly comprises a magazine extension housing having front and rear parts in which one of the front and rear parts is slidingly detachable with the other of the front and rear parts. 
     
     
         12 . The apparatus of  claim 11 , further comprising a lip defined by a top of the rear part of the magazine extension housing, wherein the lip engages a bottom of the magazine body to prevent the magazine body from sliding out of the front part of the magazine housing. 
     
     
         13 . The apparatus of  claim 12 , wherein the front part of the magazine extension housing includes a retention spring that is collapsible to disengage the lip from the bottom of the magazine body to slide the magazine body out of the front part of the magazine housing. 
     
     
         14 . The apparatus of  claim 1 , further comprising a magazine assembly including the firearm magazine base pad assembly or magazine extension assembly and the magazine. 
     
     
         15 . A firearm including the firearm magazine base pad assembly or magazine extension assembly of  claim 1 . 
     
     
         16 . An apparatus, comprising:
 a magazine extension assembly comprising a housing to receive a bottom of a magazine and house at least part of a magazine feed spring of the magazine, the housing comprising:
 a first section; and 
 a second section removably coupled to the first section, wherein one of the first and second sections comprises a front part of the housing and the other of the first and second sections comprises a rear part of the housing; 
 one of the first and second sections includes means for slidingly receiving a magazine base pad interface on the bottom of a magazine body of the magazine. 
   
     
     
         17 . The apparatus of  claim 16 , wherein one of the first and second sections of the magazine extension housing includes means for retaining the magazine base pad interface of the magazine body in the other of the first and second sections of the magazine extension housing. 
     
     
         18 . The apparatus of  claim 16 , further comprising an insert detachably coupled to the magazine extension housing, wherein a top of the insert receives a bottom of the magazine feed spring. 
     
     
         19 . The apparatus of  claim 18 , wherein the insert is retained in a cavity located in a bottom interior of one of the first and second sections of the magazine extension housing using at least one spring. 
     
     
         20 . The apparatus of  claim 19 , wherein the at least one spring comprises the magazine feed spring or a retaining spring located in magazine extension housing.