Best left to a gunsmith.
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 get a manual for free at S&W's website
No.
Does not exist.
No, no, no. Do not attempt to do this.
50-550 usd
You can request a owner's manual for free at the SMITH AND WESSON web site.
Can't be answered without knowing what model.
100-400 USD
100-450 or so
Smith and Wesson Model 10-7 started being produced in 1977. This model was replaced by 10-9 in 1988 (Model 10-8 was for heavy barrels, 7 and 9 were for standard barrels)
100-400 USD