sear deactivation lever question

[asontag]

Just got a new m&p pro 9, and when I was doing the initial take down for cleaning, the sear deactivation lever fell out. I'm new to the m&p, but from a quick search on this forum it looks like the part isn't necessary for safe/reliable operation. Should I worry that it just fell out, or is there a downside to not putting it back in?

[Skydiver]

If you are planning on shooting the gun in USPSA production, I think the part must be present if it came with the gun... e.g. All factory safety mechanisms must remain functional. I think the same is true for all IDPA divisions.

[mcracco]

The assembly consists of the lever, a spring, and a pin. The only way I can see the lever falling out is if the pin disappeared (doubt it) or a chunk of the sear block was missing.

If it were my gun I would be pulling the sear block out to find out what the heck is going on. Or, certainly Smith will take it back to do the same.

[asontag]

Thanks, that's what I needed to know. Didn't think it should be able to fall out without something else being an issue.

[sperman]

I took them out of my guns when I shot an M&P. They aren't a safety mechanism, just a way to release the sear so you can get the slide off, without pulling the trigger.

Like mcracco said, if it fell out on its own, the pin is missing.