This might have been covered but....

[Bmarshall91]

i'm contemplating on getting a laser for my sigma. is there a certain laser i should look for? (one company better than the other?) or are all lasers created equal? how about one that goes where my recoil spring is? is that possible? newbie when it comes to laser sights...

[jahwarrior72]

good luck finding one that fits, first of all. there are lots of lasers out there, but only a few a any good. i wouldn't spend less than $100 on one.

[P-11 shooter]

There is a lazer that replases the guide rod. It's called the Lasermax. But I don't think they make it for the sigma.

They do make a universal rail-mount laser that would be my choce if I had the money. The green costs alot more but is way better from what I have read. The red one is cheaper but a good quality laser.

http://www.lasermax.com/

[LowFlyer]

This will let you add a WEAVER/PICATINNEY BASED item to your Sigma.

S&W SIGMA VE RAIL ADAPTER


Mount it BACKWARDS for a little more room to fit things like this:

Tactical Xenon Light & Laser Sight for Picatinny Rail

This worked for me. It's not the BESTEST of the Light/Lasers, but after installing it, zeroing it in, removing it, replacing it, it's still pretty good for SD.

I can also place the light/laser on my AR-15. I only use the light on the AR so I don't have to readjust the laser everytime I move it back to the Sigma.