Description Barrel Length: 16Caliber-Gauge: .223 REM.Capacity: 30Finish: BlackLong Gun Web Model: Model M4Made in the USASpecific Caliber: .223 Rem.Tactical 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.