Just picked up a sigma in a trade. On the bottom back of the grip just behind the magazine baseplate there is a little plastic thingy. It moves but wont come out. whats it for?
Alex

Heh, I just noticed that the other day too. Im guessing its there to take up space in the handle so the magazine will fit.

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665: Neighbor of the Beast

Exactly, the frame plug levels the magazine floorplate to give a flat bottom to your Sigma grip. It also keeps **** from going into your pistol as the back is hollow. It took me about 6 months to replace a lost one from S&W.

would it be a bad idea to just drop a little crazy glue on it .. Seems wierd that it moves about. Is it for future replacement?
Alex

You could glue it, I guess. My 40VE is the 1st Sigma I ever heard loosing this part. Out shooting one day, came home and no frame plug. The part has, like an iceberg, a longer, upper part that clicks into place when you push it all the way in. Must have been a freak thing losing it. Sure was a pain in the butt getting another one from S&W.

I tried to get one of mine out just to see what it was it won't come out. Guess I was lucky. Looks Like its just a space filler. conn ak did the new one just snap in?

Glocks are built that way too IIRC. They have numerous after-market plugs. I think Glocks ship with just an open hole.

Yes, with a click.

Glock owners pay extra for this feature. It's one of the most popular accessories to fill that hole in the backstrap behind the magwell. S&W sends it along free with purchase of the gun.