S&W 9mm EZ with thumb safety FTF

[beaverislander]

Several years ago I sold a 9mm EZ to a friend, who has shot 100 rounds or so with no problem. Today he asked me to look at it as it was not firing. I can not see anything wrong so I'm hoping someone can suggest what may be wrong with it. (He said he has tied several brands of ammo.)
It racks rounds from the mag fine, round in chamber indicator pops up, and safety is off but it will not fire. He said he has hand loaded a round in chamber and it doesn't fire.
I see there are several you-tube videos but none with this problem.
What can I look for to help him out?
Thanks

Only modification is a Crimson Trace Laser.

 

[Denverd0n]

Problem with the grip safety not engaging, maybe?

 

[beaverislander]

Problem with the grip safety not engaging, maybe?

Good idea..... I'll have him be aware that it could be an issue. Not sure why it suddenly started happening, but it sure sounds like the safety is somehow involved.

 

[beaverislander]

He paid particular attention to the frip safety and even tried depressing the top with tape put it still doesn't fire.

 

[WR Moore]

Are the primers marked at all? A pencil is a way to verify firing pin/striker performance without involving ammo. If it doesn't launch the pencil with the laser removed, best bet is back to S&W.

Oh, DON'T just drop a round in the chamber and then close the slide. The extractor isn't designed for that.

 

[Nightowl]

I had a friend with the same problem on one of his, the 9mm, If I recall correctly. It took a couple of trips back to the factory to correct it.