Check for damage to the ejector, or the top, left side of the magazine that lies under the ejector when it's inserted.
You may also need to disassemble and clean the magazine release plunger, plunger recess and spring. The spring can get compromised by rust, and the cavity can collect old lubricants, etc.
Check the magazine shell for evidence of damage....usually can be seen as "shiny" spots on the outer surface of the shell. The interior of the magazine cavity in the gun can also become dirty, causing the magazine to hang up.
Ret LE, FA Instr, S&W Armorer
Last edited by armorer951; 03-10-2017 at 08:48 PM.