Description Direct Impingement operating system. Sixteen inch alloy-steel, match-grade hammer-forged, chrome-lined, free-floating barrel. Surefire ProComp 762 muzzle brake. FN Combat trigger. Hard-anodized aluminum receiver. Flat top upper receiver, M1913 Mil-Std rail at 12 o-clock. Proprietary rail system with M-LOK technology. Magpul MOE grip and Magpul SL buttstock. Carbine-length gas system and low profile gas block. Ergonomic safety lever and magazine release. Forward assist. Magpul PMAG 30 round magazine.Specifications:Barrel Length: 16 Caliber-Gauge: .300 AAC BLACKOUTCapacity: 30Finish: BlackLong Gun Web Model: FN15Specific Caliber: .300 AAC BlackoutTactical 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.