Dan Wesson Model W Revolver


When viewed casually, the Dan Wesson Model W-12 cal. .357 Magnum revolver appears to be of conventional double-action, swing-out-cyl-inder design. It is unusual, however, in that its barrel can be quickly and easily interchanged with one of different length. The grip also can be readily interchanged with one of different shape and size.

This versatile solid-frame revolver is produced by Dan Wesson Arms which was organized in 1968 at Monson, Mass. Daniel B. Wesson, who is presi

Revolver Front Latch Design

1 Before attempting disassembly, unload cylinder (50), and lov/er hammer (27). Use Wesson combination tool (or %" double-hex box wrench) to unscrew and remove barrel nut (19). Slide off shroud (3), and unscrew barrel (20). Depress latch (22), and swing out crane (24) and cylinder. Pull cylinder-crane assembly forward from frame (18), and detach cylinder from crane. This is sufficient takedown for normal cleaning.

Revolver Ejector Latch Pin

2 To disassemble cylinder parts, clamp knurled tip of ejector rod (48) between wooden blocks in vise or locking-jaw pliers. Insert two empty cartridge cases in opposite chambers, and use cases to unscrew cylinder from rod. This releases extractor (52), ejector rod bushing (49), and ejector spring (51).

dent of the firm, is a great grandson of Daniel B. Wesson, founder of Smith & Wesson, Inc. Dan Wesson Arms, however, is not associated with Smith & Wesson.

Barrels of six-inch, four-inch, or 2Vi" lengths are available for the model W-12. To interchange them, the revolver is unloaded, and a combination tool furnished as an accessory is used to unscrew the barrel nut. After the barrel nut and shroud are removed, the barrel is unscrewed by hand. When installing a replacement barrel, a shim gauge provided with the revolver is used to obtain proper clearance between the barrel and cylinder.

One-piece walnut grips of target,

Dan Wesson Revolver Models

3 Hole in underside of grip (34) gives access to grip screw (33). Remove screw with combination tool (5/32" Allen wrench), and pull grip downward from frame spike. Unscrew and remove side-plate screws (42) (47) with combination tool (5/64" Allen wrench). Lift sideplate (46) carefully; hand (35) is under spring tension and is easily displaced.

Dan Wesson Model Spring Change

4 Unhook hand spring (39) from groove in rear of hand, and remove hand and spring. Cock hammer. Then tighten long sideplate screw into mainspring guide (44), through hole at bottom of frame spike. Pull trigger (40), and lower hammer with thumb. Draw long arm of trigger return spring (43) outward from trigger, and allow it to arc downward until the tension is relieved. Trigger and firing pin connector (25), hammer, trigger spring, and bolt (38) can then be lifted from frame.

combat, or Michigan styles are available. The latter was designed by two Michigan State Police officers. Also available is an inletted walnut blank for those who want to shape their own grip. The combination tool is used to turn the grip screw.

The cylinder swings out to the left on a crane in the usual manner, but the latch is forward of the cylinder instead of to the rear. Pushing the ejector rod ejects all cartridges or fired cases simultaneously. The ejector rod is protected from injury by the barrel shroud—a highly desirable feature.

A firing pin connector, which is pivoted on the trigger, transmits the hammer blow to the firing pin. When the

Guns Drawing Revolver

5 Assemble in reverse. Stub arm of trigger spring must be positioned to rear of frame-mounted hammer pivot pin. Install hand spring with shorter arm bearing on forward surface of firing pin connector and longer arm hooked into hand groove. Maintain fingernail pressure against tip of hand to prevent its escape while replacing sideplate. Hold sideplate flat against frame and slide forward into place.

Revolver Barrel Face

6 Clean barrel threads, rear barrel face, and forward face of cylinder before adjusting clearance. Place .006" shim gauge on cylinder face, and screw barrel inward until a very light drag is felt on shim, just enough to hold shim in position. Install shroud and barrel nut with shim in place, rechecking clearance after barrel nut has been tightened.

Cutaway Revolver

Cutaway indicates relative position of assembled parts. Cylinder is shown opened, hammer at full cock. Parts are number keyed to parts legend.

trigger moves forward, the connector is lowered out of line with the firing pin so that a blow on the hammer will not cause the gun to fire. This safety feature—not new—is simple and efficient.

All springs in the Model W-12 are of piano wire which is noted for durability. Metal parts are steel with most exposed surfaces highly polished and blued. Hammer, trigger, and top of frame and barrel shroud rib have a matte finish.

Well designed, the sights consist of a fully-adjustable square-notch rear and Baughman quick-draw front. Windage and elevation adjustment screws in the rear sight have slots wide enough to accept a dime.

This revolver has sufficient weight to give good handling qualities for target shooting. Its balance is excellent with any of the three different barrels fitted.

Drawingrevolver 22lr

Parts Legend

1. Front sight

2. Front sight pin

3. Shroud

4. Elevation screw

5. Elevation click plunger

6. Elevation tension spring

7. Elevation tension plunger

8. Rear sight body

9. Hinge pin

10. Windage tension spring

11. Plunger spring (2)

12. Windage click plunger

13. Windage screw

14. Elevation nut

15. Firing pin retaining pin

16. Firing pin spring

17. Firing pin

18. Frame

19. Barrel nut

20. Barrel

21. Latch retaining pin

22. Latch

23. Latch spring

24. Crane

25. Firing pin connector

26. Strut

27. Hammer

28. Strut plunger

29. Strut spring

30. Cylinder aligning

31. Aligning ball spring

32. Aligning ball screw

33. Grip screw

34. Grip

35. Hand

36. Bolt spring

37. Bolt plunger

38. Bolt

39. Hand spring

40. Trigger

41. Trigger stop screw

42. Sideplate screw

43. Trigger return spring

44. Mainspring guide

45. Mainspring

46. Sideplate

47. Sideplate screw

48. Ejector rod

49. Ejector rod bushing

50. Cylinder

51. Ejector spring

52. Extractor

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  • habte
    How assembly revolver barrel?
    9 years ago
  • alexander
    How to remove the trigger from dan wesson revelver?
    9 years ago
  • thomas
    Where to get dan wesson #44 connector and hand spring?
    7 years ago
  • Where to find dan wesson model number?
    7 years ago
  • dehab
    How to repair a dan wesson arms 357 magnum revolver 6'' barrel cracked frame?
    7 years ago
    How to remove the firing pin on dan wesson 357?
    7 years ago
  • Fiori
    What are the components of a dan wesson barrel mag assembly?
    7 years ago
  • roy lai
    How to put a crane assembly together in a revolver?
    7 years ago
  • bernard
    How to reassemble a dan wesson 357 142?
    7 years ago
  • alanna
    How to dismantle revolver barrel?
    7 years ago
  • ella
    How to remove side plate on dan wesson 44 mag?
    7 years ago
  • tim
    How to remove cylinder from model 40 Dan Wesson?
    6 years ago
  • karen allen
    How to detail disassemble a dan wesson 44 mag. revolver?
    6 years ago
  • goytiom
    What size wrench to remove dan weson model 15 hammer spring?
    3 years ago
  • merja
    How to remove Dan wesson barrel nut without tool?
    3 years ago
  • jonas
    How do i install barrel on dan wesson revolver 357?
    5 months ago

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