Pull the slide back until the notch on the slide closest to the muzzle is over top of the slide-lock pin. While holding the slide back, push the slide- lock pin out (push from the right hand side of the gun). Slowly allow the slide to go forward. Release the hammer gently. Pull the slide towards the muzzle and it should slide right off. Remove the guide rod and recoil spring from the underside of the slide. Then twist the barrel bushing at the muzzle and pull it out so that the barrel can move. This is the least amount of disassembly needed for a proper cleaning. You will want to clean the barrel, inside and out, as well as the underside of the slide, and any other parts inside that may have dirt, oil, residue or other fowling. Re-oil the weapon and assemble using the steps above in reverse.
Best left to a gunsmith.
44.
1991-1999
Yes.
No
100-300 USD
Recommend you ask a gunsmith for assistance.
Best left to a trained gunsmith.
No way to accurately answer without the serial number.
Smith and Wesson began listing serial numbers in 1984 with a three letter prefix to there serial numbers.So you should be able to identify the year of manufacture by the 3 letter prefix and then the following number.Smith and Wesson began production of the model 4046 in 1991,and discontinued this model in 1999.The Smith and Wesson model 4046 Tactical was made from 2000-2002.I hope you find this of interest.
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 manuals at the Smith and Wesson website.