Ideal for crafting your personalized AR-15 upper assembly, this product features a meticulously installed M4 barrel extension, ensuring optimal performance and reliability. Each barrel sub-assembly is expertly head spaced to guarantee precision and safety, providing you with a solid foundation for your custom build.

Multi-role profile
4140 chromium molybdenum steel
Internal and external surfaces feature a salt bath nitride finish
Twist rate - 1:7
Chamber for .300 AAC Blackout
Threaded 5/8-24
3/4 inches gas journal

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These items are controlled by the U.S. Government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. They may not be resold, transferred, or otherwise disposed of, to any other country or to any person other than the authorized ultimate consignee or end-user(s), either in their original form or after being incorporated into other items, without first obtaining approval from the U.S. government or as otherwise authorized by U.S. law and regulations.

WARNING: Handling firearms or firearms parts can expose you to lead and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. Wash hands thoroughly after handling. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).