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1. It is listed as a civilian VARIANT. A variant of the Armalite AR-15.
This article describes the many variations of the Colt AR-15 and M16 rifle family of weapons produced by Colt's Manufacturing Company. Weapons patterned on the original ArmaLite AR-15 design
Note that both "family" and "design" are singular.
2. Entirely irrelevant. Many weapons are DESIGNED and never issued as "standard". Semi-auto AR-15/M16s were bought and issued by USAF.
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