Bangor Punta no longer owns the S&W Air gun division, they sold it to Daisy air gun around 1980. Umarex also made S&W copies around 1999.
As of October 2023, Smith & Wesson is owned by American Outdoor Brands Corporation (AOB). The company underwent a rebranding and restructuring, separating its firearms division, including Smith & Wesson, from other outdoor lifestyle brands. Smith & Wesson remains a prominent manufacturer of firearms in the United States.
A shotgun made for Smith and Wesson, sold under the Smith and Wesson name.
There is a very long story behind this question But here is the short version. S&W was purchased by Bangor Punta in 1965, with the help of a former Crosman Engineer the 77A was developed After several moves back and forth from Florida to Massachusetts Bangor decided to sell the Airgun division to Daisy Airgun in 1980 but had dropped the 77A model in 1978. I don't know of any diagrams for the 77A but it is a forerunner of the Daisy Power-line models. I would try to contact Daisy airgun to see if they "may" be able to help. See the related link at the bottom.
Standard Catalog of Smith and Wesson
The Wesson part of Smith and Wesson.
Smith and Wesson will tell you if you call them
Horace Smith, Daniel Wesson
Smith & Wesson was founded in 1852.
That all depends on what kind of Smith & Wesson it is.
Standard Catalog of Smith and Wesson, 3rd ed.
Smith and Wesson Model No. 2
smith and Wesson (smith & Wesson) and Sig-Sauer