คุณพ่อของคุณสุขวิสุตบอกมาถูกต้องแล้วครับ ใช่กระบอกในรูปหรือเปล่าครับ ถ้าใช่แสดงว่าคุณพ่อท่านเก็บรักษาไว้ดีมาก ๆ เลยครับ
The history of the post-World War 2 S&W semi-autos began from its famous model 39 pistol, the first productional Double Action pistol made in USA. The development ot the model 39 began in 1949, and first production pistols saw the market in 1955.
Basically, all later S&W centerfire semiautos are further developments of model 39. Model 39 was recoil operated, locked breech firearm, utilising Browning High-power type locking principle and double action trigger with slide-mounted safety switch, also working as a decocker when switched to "safe" position. In 1970, S&W introduced model 59, a high-capacity (double stack magazine) modification of the model 39. The other difference between mod.39 and 59 was that mod.59 featured straight backstrap while mod.39 featured curved backstrap. Those two models formed so called First generation of S&W semi-autos. Both model 39 and model 59 are discontinued from production since 1980 or so.
ข้อมูลจากลิ้งค์ด้านล่างนี้ครับ
http://world.guns.ru/handguns/hg01-e.htm
