ArmaLite's law enforcement rifles and carbines feature receivers machined from aircraft -grade aluminum forgings, hardcoat anodized for durability and long life. Available in a variety of barrel lengths and configurations, ArmaLite's rifles feature 100-percent, U.S.-made parts for quality and craftsmanship. The law enforcement versions are available in either semi-automatic or select fire models, allowing departments to customize their rifles to specific tactical requirements. ArmaLite rifles are available in .223, .308, and .300 RSAUM calibers and with 14.5-, 16-, 20-, and 24-inch barrels.