How do you field strip a smith and Wesson 639?

Are ruger handguns made in the US? What is the difference in a damascus barrel? Where is the wrench on puppet show souls of the innocent? How do you break down a 20 gauge single shot champion? What moving parts are in an ak-47? Manufacture date of Remington model 41p serial number 182940? What is the value of browning A-5 invector special Sweet16? What is the value of a smith and Wesson model 19 357 mag 4 barrel worth? How much is a fox double barrel worth? What is the value of a Mossberg 9200 simi-automatic shotgun? Where to get parts for powerline air rifle model 922? What is the main difference center fire and rim fire ammunition? Value 1917 enfield 30-06 Winchester 5 digit serial number? What is the value of a kimber 25th anniversary 45cal pistol? Is a fn p90 legal in the US? What year was a Winchester 22 rifle model 61 serial? Can you own a rifle in NYC? What is value of PERCUSSION double barrel shotgun? How old is a Winchester 97 serial number E1014186? How do you increase the power of a fx verminator air rifle?