Description AR-15 Parts: AR-15 PartsCaliber-Gauge: .223 REM.Capacity: 4 Made in the USASpecific Caliber: .223Tactical Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.