Firearm magazine adapter and release assembly

A firearm, comprising:

• a magazine release/retention assembly, including:
• a first magazine release mechanism including:
• a first release lever having a first end and a second end;
• a first transfer link coupled to the second end of the first release lever, the first transfer link being configured to removably couple to a magazine catch assembly, the magazine catch assembly being configured to move between a magazine-engaging state and a magazine-disengaging state, wherein actuation of the first release lever moves the magazine catch assembly toward the magazine-disengaging state and wherein release of the first release lever returns the magazine catch assembly to the magazine-engaging state;
• and
• a second magazine release mechanism, including an ambidextrous transfer link, an ambidextrous release bar coupled to ambidextrous transfer link, and a second transfer link coupling the ambidextrous transfer link to the first transfer link and the first release lever such that actuation of the ambidextrous release bar moves the magazine catch assembly toward the magazine-disengaging state and wherein release of the ambidextrous release bar returns the magazine catch assembly to the magazine-engaging state.

A firearm, comprising:

• a magazine well including an adapter-receiving portion defining an adapter receiving-recess;
• and
• a magazine adapter configured to selectively retain a type of magazine in the magazine well, including a magazine catch assembly removably coupled to the adapter-receiving portion of the magazine well, the magazine catch assembly being configured to move between a magazine-engaging state and a magazine-disengaging state;
• and
• a magazine release/retention assembly, including:
• a first magazine release mechanism including:
• a first release lever having a first end and a second end;
• a first transfer link coupled to the second end of the first release lever, the first transfer link being configured to removably couple to the magazine catch assembly, wherein actuation of the first release lever moves the magazine catch assembly toward the magazine-disengaging state and wherein release of the first release lever returns the magazine catch assembly to the magazine-engaging state;
• and
• a second magazine release, mechanism, including an ambidextrous transfer link, an ambidextrous release bar coupled to ambidextrous transfer link, and a second transfer link coupling the ambidextrous transfer link to the first transfer link and the first release lever such that actuation of the ambidextrous release bar moves the magazine catch assembly toward the magazine-disengaging state and wherein release of the ambidextrous release bar returns the magazine catch assembly to the magazine-engaging state.