Lock the slide back. Remove the magazine. Snap the trigger guard smartly downward. Pistol must be held horizontal during this maneuver because the barrel is now free to fall away. Lift barrel upward from the frame. Pull the slide back at a slight upward angle. Push the slide assembly forward to free it from the frame. The gun is now ready for cleaning. Reversing the procedure reassembles the Model 41. In the field stripped position, the gun is reduced to six parts: frame including trigger, trigger guard and grips, barrel, magazine, slide assembly, recoil spring, and recoil spring guide.
found the above from:
it's been awhile but this is exactly as I remember doing it.
You can get manuals at the Smith and Wesson website.
Ask a gunsmith for help
Recommend you find a good gunsmith.
check out this video: In general, Sigma pistols disassemble like a Glock. http://www.youtube.com/watch?v=O7ws0gAQlpY
Best left to a trained gunsmith. For normal cleaning, no disassembly is needed.
25-2500 usd
Go to S&W's web site and request a owner's manual. They will send it to you for free.
You Can't. This Idea is beyond the capabilities of the pistol.
If you go to You-Tube and type in disassemble of Smith and Wesson model 915;there should be a video of the steps needed to take down your smith and Wesson semi-auto 9mm.
You can request or download a manual from the S&W website. If that doesn't work for you, find a good gunsmith.
Ask a gunsmith.
50-500 usd