Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: I have 3 different hand guns and each has a different thicknes and lenght of rail. Can any one tell me these dimentions on the S&W Sigma?
Document: This laser sight works perfectly with my S&W Sigma 40. I do not need to add a rail or anything to my gun which will add weight. The sight is very easy to adjust and is easy to use.
Got it and noticed I ordered the wrong one! Aw[...] I have a S & W  (SD9VE) this is for a (SW9VE) (my fault)... but with a little of work ended up working excellently!
very easy to install and adjust. it looks great very slim line, not bulky. cant wait to take it out shooting and zero it in. fits perfect on my S&W sigma .40
This sight form fits this piece (SW9VE) like it was especially designed for the Sig, and it was! If you own an S&W; Sigma and your thinking of purchasing a laser sight that has excellent characteristics, this sight is THE ONE! !Update 01/21/2012: In regards to "Cons": I contacted ArmaLaser through Amazon and my missing cleaning brushes, more like Q-tips, arrived in about three days. Yes, their customer service works, and works well.
The sight was not for my S&W 40 cal. It would not fit at all. I couldn't even make it fit.
I am not sure if Amazon sent me the wrong laser. The package was missing stuff and the laser didn't seem to fit the packaging right. The Laser sent to me will fit a 1&#34; rail. The rail on my SD9 is just over 3/4&#34;. Even if I tightened it down all the way it still will not stay on even loosely.
More good stuff:  Comes with a 5 year warranty -- they say the battery is good for 3 hours continuous use -- one of the cheaper models a reviewer said only lasted about 20 minute -- you get what you pay for, right? Two batteries ($2 each on Amazon) were included so figure on replacing those after sighting in and some pleasure shooting. I looked and looked but could not find a &#34;Made In USA' anywhere?
My friend and I both have the Sigma 9mm I purchased this for him for X-mas I wanted to see if I would get one for my 9mm. It fits great its not too bulky , and it doesnt make the gun look stupid. I would definetly get one when I can afford one myself LOL. Just like everything I order it shipped quickly. I cant'tsay anything bad about it.
The price is pretty stiff, comparatively speaking, but I'll pay more gladly for "Made in the U.S.A." quality. My package was short both cleaning brushes. I will contact ArmaLaser to see what happened to my brushes. Hopefully they will just send me some out, we'll see.Other Thoughts:I have used laser sights on my weapon(s) before but nothing compares to the Stingray by ArmaLaser for the Sigma Series. It is a very well thought out piece.
Before i purchased I was really skeptical That it would fit the rail on the gun. It fits great its nice and bright
Answer: no