Category Archives: gun


The Remington Model 31 slide action shotgun was the company’s first side ejecting pump. It was produced from 1931 to 1949.1


The Smith & Wesson Model 642 Centennial Airweight Stainless was introduced in 1990 as a round butt, fully concealed hammer, double action only, revolver built on a three screw alloy J frame. It came with a two or three inch stainless steel barrel and a five flute 1.53 inch 1 stainless steel cylinder chambered in .38 Smith & Wesson Special.2

  • production3
    • introduced – 1990
    • discontinued 3″ barrels – 1992
    • discontinued – 1993
    • reintroduced as 642-1 w/ J magnum frame – 1996
    • master trigger lock added – 1997
    • barrel markings move to left side – Aug 1997
    • 642-2 introduced w/ internal key lock system – 2002
    • two line address adopted – 2002
  • variants
    • LadySmith4
  • related
  • gunsmith notes

Featured Image: The right side view of the S&W Performance Center Pro Series Model 642 Revolver.5

VP Series Pistols

The Heckler & Koch (HK) VP Series pistols are …

The pistols in the series are:

      • VP9
      • VP9 SK
      • VP40

gunsmithing note(s):

      • The dovetails on these guns are not directional. As such the sights may be removed or installed in either direction.
      • The roll pin on the right side of the slide (that lines up with the firing pin safety) is not blind. It is driven out into the striker channel to remove.



The Remington Model 550 rifle is a rimfire …


        • Remington Model 550-1
        • Remington Model 1A
        • Remington Model 550-2G ‘Gallery Special’
        • Remington Model 550-A

gunsmithing note(s):

      • If the sear spring case becomes cross-threaded due to improper disassembly and/or assembly, the threads are 3/8-32.1
      • . . .


      • The Remington Model 550 & variants appear on page 632-5 of the Encyclopedia of Modern Firearms. This includes references to the Remington Model 550-2G ‘Gallery Special’, sectional views of the Remington Model 550-1 with the action open and the action closed, sectional views of the Remington Model 550-A with the action open and the action closed, a sectional view of the Remington Model 550-2G with the action open, general disassembly instructions, some troubleshooting guidance, and a parts list.2


The Savage Model 10 bolt action rifle …

gunsmithing note(s):

      • The action is held in place on the barrel by a barrel nut. The barrel lug is sandwiched between the action and the barrel nut.
      • There is a smooth barrel nut and a standard (slotted) barrel nut.
      • The most effective method of removing the smooth barrel nut is to hold the barrel in a barrel vise and use a pipe wrench to loosen the nut. This will mar the nut severely enough that it cannot be reused. Replace it with a standard (slotted) nut.
      • To remove the barrel nut, turn it in the clockwise direction from the shooter’s perspective.




The Colt Woodsman semiautomatic pistol is …

gunsmithing note(s):