2 Easy Steps
How To Tell If You Have a 5-Screw, 4-Screw or 3-Screw Gun
Look to see if your gun has this screw....
If it has this screw, stop. You have a 5-Screw gun.
If your gun does NOT have that fifth screw, look to see if it has this screw....
If your gun has this fourth screw on the front of the trigger guard, but not the fifth screw shown in the first photo, you have a 4-Screw gun. If your gun does NOT have this screw, you have a 3-Screw gun. That's it! It really is that easy. You do not have to remove the grips. And by the way, if your gun has five scews it was made 1955 or earlier. If it has four screws, it was made 1955 to 1961. If it has only three screws, it was made 1962 or later. Remember, Date of Manufacture (DOM) does not always correspond with Ship Date.
In November of 2021, I bought my first Smith & Wesson K-22 Masterpiece. I fell in love with the gun immediately. So much in fact, that I had the idea to buy one for my son and two son-in-laws for Christmas. These guns were made to shoot. And I just knew that if any gun could cause the young men to develop an appreciation for old guns, it would be the K-22.
Smith & Wesson model numbers have always made me a tad dizzy when people start rattling them off like I should know what they're talking about. Honestly, I haven't collected or studied Smith & Wesson handguns enough to be proficient in all the various model numbers.
After S&W began calling the K-22 Masterpiece the Model 17 in 1958, they would add a dash and another number each time they made a significant change to the gun. For example, in 1960 the Model 17 transisitioned to the Model 17-1, then in 1961 it became 17-2, then later 17-3, 17-4 and so on.
The 1948 gun came from a seller in Iowa. The 1950 gun was purchased from a dealer in Virginia. I found the 1953 example at a very large retailer in Minnesota. And finally, that first K-22 I purchased was the 1957 specimen that made its way from North Carolina.