1. All claims from any manufacturer that they produce commercial rifles fully in conformance with the MILSPEC are false. Only M16A2 rifles produced by Colt or FNMI, and accepted by the Army’s Tank automotive and Armaments Command fully meet the requirements of the MILSPEC, and they are not legally producible for sale to the public. Even Colt brand commercial rifles are not in conformance with the drawing portion of the MILSPEC. In fact, ArmaLite’s rifles are closer to the government designs than
2. The M16A2 Rifle is manufactured in accordance with MILSPEC MIL-R-63997. A MILSPEC (military specification) describes a product. There are two key elements to a MILSPEC; a verbal description of what the product is and does, and a list of reference documents governing production of the product. In the case of the M16A2 Rifle, the key document is Drawing 9349000, which is a package of drawings setting forth the dimensions and tolerances for the M16A2 Rifle.
3. No commercial, semiautomatic rifle from ANY manufacturer meets both the verbal descriptions of the M16A2 and the technical drawing package.
4. ArmaLite does not claim that its rifles are made to the full provisions of MIL-R-63997. All ArmaLite/Eagle Arms rifles, however, are manufactured to the written requirements set forth by MIL-R-63997.
5. ArmaLite and Eagle Arms rifle parts feature excellent interchangeability with MILSPEC M16A1 and M16A2 parts. With the exception of parts designed for semiautomatic use only, no known incompatibilities exist.
Just some think i found.