Product DescriptionThe FIGHTLITE INDUSTRIES MCR060M is a mission-configurable, dual-feed complete upper receiver assembly for AR-15/M16/M4 MIL-Spec lower receivers, designed to deliver exceptional flexibility and sustained-fire capability. Built around a short-stroke gas piston operating system for enhanced reliability, this upper features a 16.25-inch quick-change barrel system and a rugged 7075-T6 billet upper receiver construction. The dual-feed design allows operation with standard AR-15/M16 magazines or M27 linked ammunition (at operator discretion), while the M-LOK handguard and MIL-STD 1913 top rail provide ample mounting space for optics and accessories. An adjustable sight set and included A2 flash hider round out a duty-ready package.Product Highlights Dual-feed upper receiver assembly accepts AR-15/M16 magazines or M27 linked ammunition for maximum versatility 16.25-inch quick-change barrel system for fast reconfiguration without tools (per manufacturer/retailer description) Short-stroke gas piston operation engineered for reliability in adverse conditions Precision-machined 7075-T6 billet upper receiver components with durable anodized black finish M-LOK handguard with MIL-STD 1913 top rail space for optics, lights, grips, and modern accessoriesSpecs Brand: FIGHTLITE INDUSTRIES Manufacturer Part Number: MCR060M UPC: 859714006354 Type: Complete Upper Receiver Assembly Cartridge: 5.56x45mm NATO Barrel Length: 16.25 in Twist Rate: 1:7 Muzzle Threads: 1/2-28 Muzzle Device: A2 Flash Hider Handguard: M-LOK Material: Aluminum (7075-T6 billet receiver noted) Finish/Color: Anodized, Black Sights: Adjustable sight set / sights included Bolt Carrier Assembly Included: Yes Compatibility: AR-15 / MIL-Spec lower receivers Overall Length: 25.5 in Country of Origin: United States of AmericaDisclaimer: 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.