Product Description The TacFire SSBU55616 upper assembly is built for 5.56 NATO and features a durable black nitride finish with a 16-inch barrel length and an M-LOK handguard for accessory-ready versatility. This upper assembly is designed to provide a streamlined profile and a corrosion- and wear-resistant finish suitable for hard use and regular range time. Product Highlights 5.56 NATO upper assembly with a 16-inch barrel length for a balanced handling profile Black nitride barrel finish for enhanced corrosion resistance and durability M-LOK handguard for flexible mounting of accessories and improved ergonomics Quality TacFire construction ideal for upgrades, builds, and replacements Factory-identified by MPN SSBU55616 and UPC 729205658860 for easy verification Specs Brand: TacFire Manufacturer Part Number: SSBU55616 UPC: 729205658860 Caliber: 5.56 NATO Barrel Length: 16 in Barrel Finish: Black Nitride Handguard: M-LOK 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.