|Smith & Wesson Model 645|
|Place of origin||United States|
|Manufacturer||Smith & Wesson|
|Weight||2.3 lbs (1.06 kg)|
|Caliber||.451 in (11.45 mm)|
|Action||Double Action/Single Action|
|Effective range||165 ft (50 m)|
|Feed system||8-Round Box Magazine (+1 in chamber)|
|Sights||Fixed Iron Three-Dot, Adjustable available|
The Smith & Wesson 645 and Smith & Wesson 745 are second-generation semi-automatic pistols which predates Smith & Wesson's 4500 series of handguns. The S&W 645/745 is chambered for the .45 ACP cartridge. The S&W 645 is constructed almost entirely from stainless steel and is thus extremely resistant to harsh weather conditions, whereas the S&W 745 has a stainless steel frame and a blued carbon steel slide. The S&W 645 was introduced in 1985 and discontinued in 1988. The S&W 745 was produced from 1986 to 1990, primarily as a single-action competition gun for IPSC shooting.
Smith & Wesson (S&W) began experiments with .45 ACP-firing pistols in 1984, and produced their first one, the Model 645, in 1985. Public demand led to the development of this series. The series is a .45 ACP version of their 9mm Parabellum weapons. They are normally double-action weapons, or what Smith & Wesson refers to as a traditional double action. They generally have a barrel bushing press fitted into the muzzle end of the slide instead of a separate barrel bushing like a 1911 pistol. Like many Smith & Wesson models, each variant was generally in production for only a few years.
The Model 645 was introduced in 1985, and produced until 1988. It has a stainless steel frame and slide, an ambidextrous safety/decocker, a squared trigger guard, and black plastic grip plates. The Model 745, built from 1986-1990, was a single-action target version of the Model 645, with a match barrel, Novak sight (an adjustable rear sight was optional), an adjustable trigger stop, stainless frame,walnut grip panels and blued slide. It does not have ambidextrous controls, but does have a half-cock safety. The pistol is rollmarked "IPSC 10th Anniversary 1976-1986".
Smith & Wesson changed its numbering system with the introduction of its third generation iteration, where a four digit numeral replaced the earlier three digit numeral designators. One of the first in this series was the 4505; this is essentially the 645 with only the safety catch ambidextrous and a blued finish. A Novak Lo-Mount rear sight was installed on a small number of 4505s. It was produced only in 1991. The Smith & Wesson Model 4506, is made of satin finished stainless steel, a Novak Lo-Mount rear sight later in the series, and a Xenoy wrap-around grip with either a straight or arched backstrap. After 1998, the 4506 had a rounded trigger guard profile, which replaced the earlier squared profile inherited from the 645. The 4506 was produced from 1988-2001.
The S&W 645 was used in Miami Vice by the character Vice Detective Sonny Crockett in seasons 3 and 4 of the TV series.
- Sweeney, Patrick (2004). "The 4513 TSW: A tactical 45 with flair". The Gun Digest Book of Smith & Wesson. Iola, Wisconsin: Gun Digest Books. pp. 257–261. ISBN 978-0-87349-792-3. http://books.google.com/books?id=eBxEBgJBG0MC&pg=PA261. Retrieved 14 February 2012.
- Supica, Jim; Nahas, Richard (20 December 2006). Standard Catalog of Smith & Wesson. Iola, Wisconsin: Gun Digest Books. p. 294. ISBN 1-4402-2700-4. http://books.google.com/books?id=aUb20H1UFCIC&pg=PA294.
- Ayoob, Massad (2008). The Gun Digest Book Of Concealed Carry. Iola, Wisconsin: Gun Digest Books. p. 144. ISBN 978-0-89689-611-6. http://books.google.com/books?id=vY0wBGb82DoC&pg=PA144. Retrieved 14 February 2012.
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