|Winchester Model 100|
|Place of origin||United States|
|Manufacturer||Winchester Repeating Arms Company|
|Mass||7.5 pounds (3.4 kg)|
The Winchester Model 100 was a semi-automatic rifle manufactured by Winchester Repeating Arms Company. It was first introduced in 1961, and was manufactured until 1973. A total of approximately 262,838 were manufactured. Variants of the weapon are capable of firing a .308, .243, or .284 Winchester cartridge. The barrel is 22 inches (56 cm) long. The rifle weighs 7.5 pounds (3.4 kg). 
In 1990, Winchester issued a recall for this rifle due to a tendency for the firing pin to break due to use and metal fatigue and become lodged in the breech bolt face, causing the rifle to fire with the action not fully locked, leading to possible catastrophic failure and risk of severe injury or death to the shooter. Winchester offered to do repairs on the gun free of charge.