Winchester Model 100

{{infobox weapon

| name = Winchester Model 100

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| origin = United States

| type = Semi-automatic rifle

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| manufacturer = Winchester Repeating Arms Company

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| production_date = 1961–1973

| number = 262,838

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| weight = {{convert|7.5|lbs|kg}}

| part_length = {{convert|22|in|cm}}

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| caliber = .308 Winchester, .243 Winchester, .284 Winchester

| barrels = 1

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The Winchester Model 100 is 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 {{convert|22|in|cm}} long. It was also available in a Carbine with a 19" barrel. The rifle weighs {{convert|7.5|lbs|kg}}.{{cite book|last=Henshaw|first=Thomas|title=The History of Winchester Firearms 1866-1992|url=https://books.google.com/books?id=T-Irz4qHwsQC|access-date=March 23, 2011|year=1993|publisher=Academic Learning Company LLC|isbn=0-8329-0503-8|pages=140–141}}