Sigma "front sight" removal?

[Mickstix]

Hey, has anyone removed the "front" sight from a Sigma9VE?? I thought most front sights were held in with a screw or nut, but the bottom of mine looks like it's a blob of melted plastic or something? Any idea how they come out and go back in?? Thanks!!

 

[Mickstix]

Hey, has anyone removed the "front" sight from a Sigma9VE?? I thought most front sights were held in with a screw or nut, but the bottom of mine looks like it's a blob of melted plastic or something? Any idea how they come out and go back in?? Thanks!!

 

[conn ak]

Yeah, what is that mess on the inside of the slide, under the front sight. Looks like a bird dropping.

 

[MK]

I'm not sure, but it kind of looks like the
sight has a plastic stud that sticks through
the hole, and they heat it with something to
flatten it down and lock it into place.
But I'm just guessing. :/

 

[Double-O-Dave]

MK:

You have assessed the front sight situation correctly. Once they have been inserted at the factor, they use heat to deform and "stake" the front sight post into place. I had to remove the front sight on my Sigma 40F and it was very simple to remove the slide, lay it upside down on a small towel on workbench and punch it through with a small pin punch. I'm not sure, but I don't think the old (original) front sight could be reinstalled or reused.

Regards,

Dave

 

[shawn mccarver]

Originally posted by Mickstix:
Hey, has anyone removed the "front" sight from a Sigma9VE?? I thought most front sights were held in with a screw or nut, but the bottom of mine looks like it's a blob of melted plastic or something? Any idea how they come out and go back in?? Thanks!!

Once you remove it, it cannot be reinstalled, so be careful.

 

[gend1]

The front sight is "hydrosonically welded" in place by rf waves. It melts the plastic stem of the sight flat to the slide. Only alternative is to get a sight that has a screw that will hold it in the slot, like a night sight from Trijicon etc. It needs to be flat enough against slide to not interfere with bbl operation on chamber/eject.

 

[Mickstix]

Thanks for the info! Figures they would do something like that, so ya cant remove/replace the sight w/o damaging it.. Some may actually like to try other sights w/o having to send it back to S&W if they decide to go back to stock..