# Calico M100

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The **M100** is a [blowback](/source/Blowback_(arms))-operated [semi-automatic rifle](/source/Semi-automatic_rifle) chambered in [.22 LR](/source/.22_LR), manufactured by [Calico Light Weapons Systems](/source/Calico_Light_Weapons_Systems) in [Elgin, Oregon](/source/Elgin,_Oregon), United States. It was originally designed and released in the 1980s to be of use by law enforcement and the military.[1][2]

## Legislation

With a high capacity [helical-fed magazine](/source/Helical_magazine) mounted on top of the weapon, the introduction of the [Federal assault weapons ban](/source/Federal_assault_weapons_ban) made manufacture of the Calico family of weapons for sale to civilians illegal - except the .22 caliber rimfire models which were exempt from the ban - until the legislation expired on September 13, 2004, in accordance with its [sunset provision](/source/Sunset_provision).

The company is now allowed to build the firearm to their original configuration.[2]

## See also

- [American-180](/source/American-180)

## References

1. ["Calico M100"](https://web.archive.org/web/20121016010321/http://thespecialistsltd.com/calico-m100). thespecialistsltd.com. Archived from [the original](http://thespecialistsltd.com/calico-m100) on 16 October 2012. Retrieved 22 November 2012.

1. Peterson, Phillip (15 November 2010). [*Gun Digest Buyer's Guide to Tactical Rifles*](https://books.google.com/books?id=_TOaNipXcIkC&pg=PA32). Iola, Wisconsin: Gun Digest Books. pp. 32–34. ISBN 1-4402-1781-5.

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