The BATTLEARMS® AUTHORITY™ series of firearms are designed from the ground up and purpose-built as the next generation AR-15. The heart of the rifle is the billet BAD556 7075-T6 aircraft grade aluminum receiver with integral ambidextrous controls and free-float rail handguard with M-LOK attachment points at 3, 6, and 9 o’clock positions. At 12 o’clock is a full-length Picatinny accessory rail with our signature notch cut matching the upper receiver. Every firearm is equipped with a 4150 chrome-moly steel black nitride barrel for durability and accuracy. Each barrel is individually head-spaced with matching Carpenter 158 steel bolt and 8620 black nitride carrier for ultimate reliability and ease of cleaning. Rifle models utilize a mid-length gas system for reliable and smooth cycling action while reducing recoil and minimizing wear. SKU: AUTHORITY-010UPC: 810033782695Manufacturer: Battle Arms Development, Inc.Receiver Model: BAD556-AMBI (Billet)Type: Semi-AutoCaliber: .223WYLDEMuzzle Thread: 1/2x28 TPIRail Length: 15in WORKHORSE™ MLOK Freefloat HandguardGas System: Mid LengthBarrel Length: 16inBarrel Twist Rate: 1:8TBarrel Profile/Finish/Material: Medium Profile Black Nitride 4150CM .750 Diameter Gas Block JournalWeight: 6.1 lbs (2.77 kg)Overall Length: 36.75in (933.45mm)Collapsed Length: 33.25in (844.55mm)Charging Handle: RACK™ Ambidextrous Charging HandleTrigger: Enhanced Nickel TeflonSafety: BAD-ASS-PROBuilt-In: Ambi Magazine and Bolt ReleaseStock/Brace: B5 BravoFinish: BATTLEARMS® GreyMagazine: (1) 30rd MagazineSights: Optics Ready Platform EXPORT NOTICE: This product and/or its components is subject to the Arms Export Control Act (AECA), the Export Administration Act (EAA) as continued in effect under the International Emergency Economic Powers Act (IEEPA), the International Traffic In Arms Regulations (ITAR, 22 CFR Parts 120-130), the Export Administration Regulations (EAR) and the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) Regulations. Export is strictly prohibited without authorization or a license issued by the U.S. Department of State's Directorate of Defense Trade Controls. Any documents, drawings, prints, etc. that can be viewed, downloaded, or printed from our website may contain technical data which may not be exported outside of the United States or released/disclosed to non-US persons (i.e. persons who are not US citizens or lawful permanent residents) inside of the United States, without prior written authorization by the relevant US Government agency. Penalties for violation of U.S. export laws and regulations can reach $1,000,000 per violation and include up to 10 years imprisonment.