Some stores that sell the Swingline Heavy Duty Stapler as of 2015 are Swingline, Staples and Uline. Variations of this particular brand of stapler exist, and each model has its own features.
Swingline offers numerous Heavy Duty Stapler models. The Swingline High Capacity Heavy Duty Stapler staples up to 210 sheets, and the Swingline Heavy Duty Plier Stapler is a top-loading stapler with a capacity of up to 60 pages. The Swingline LightTouch Heavy Duty Stapler has a 120-sheet stapling capacity, and it requires half the effort of traditional heavy duty staplers because of its low-force design. It is available for purchase directly from Swingline, but it is also sold online by retailers such as Uline.
The standard Swingline Heavy Duty Stapler is available from the online stores of both Swingline and Staples, and it can staple a maximum of 160 sheets at a time. All of these models require a specific type of heavy duty staples for optimal performance.