S&W M&P 15-22 bolt help

[BIGLEW]

About a month ago, maybe longer, my M&P 15-22 had a malfunction. I'm just looking it over and don't remember this hole being in the bottom of the bolt. Can anyone else that owns one check theirs and let me know? Thanks.

 

[outlaw1961]

Just checked mine. No hole or cut out on bolt

 

[BIKER13]

recall on the 15-22 might want to check it out