Product Description The PROOF RESEARCH AR-Style Barrel (100387) is built from stainless steel for shooters who demand consistent performance and durability. Engineered for an optimum combination of high tensile strength and toughness, it is designed to withstand extreme chamber pressures encountered during firing while delivering excellent erosion wear characteristics and corrosion resistance. This barrel is chambered in .223 Wylde and features a precision 11.50-inch length with 1/2"-28 muzzle threads for compatibility with common muzzle devices. Product Highlights Stainless steel AR-style barrel engineered for high tensile strength and toughness under extreme chamber pressures .223 Wylde chambering for versatile use with common .223/5.56-compatible loads (per chamber spec) 11.50-inch barrel length for compact AR-style rifle builds Excellent erosion wear characteristics and corrosion resistance for long service life 1/2"-28 muzzle threading supports a wide range of muzzle devices and suppressor mounts Specs Brand: PROOF RESEARCH Manufacturer Part Number: 100387 UPC: 843068100387 Chamber/Caliber: .223 Wylde Barrel Length: 11.50 in Grooves: 4 Muzzle Threads: 1/2"-28 Material: Stainless steel Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.