FightLite MCR Dual-Feed 16.25" Upper 5.56x45mm 1:7 M-LOK Picatinny Rail, Black

The groundbreaking MCR (Mission Configurable Rifle) belt-fed upper receiver assembly revolutionizes the AR/M4 platform by seamlessly integrating with any MIL-Spec lower receiver without permanent modifications. Rearward compatible with AR-15/M16 models dating back to 1963, this innovative system allows users to transform their rifle in seconds without the need for tools, adapting effortlessly to any mission profile. Engineered for responsible armed citizens, law enforcement, and professional security personnel, the MCR enhances performance with a gas-piston operation for extreme reliability in adverse conditions. Its 16.25 inches quick-change barrel system enables rapid barrel swaps in just three seconds, while the M-LOK co-planar handguard provides a secure platform for mounting optics and modern accessories. Offering unparalleled versatility, the MCR functions as both an optic-ready carbine and a lightweight support rifle, accepting standard AR-15/M16 box magazines or M27 linked ammunition for exceptional firepower and adaptability. Drop-on upper receiver assembly is designed to upgrade your AR-15/M16/M4 lower receivers or rifles, providing an easy installation for improved functionality The 5.56 x 45mm round offers versatility and reliability in a variety of firearms The 16-1/4 inches quick-change barrel allows for easy swapping without tools Features a 1:7 inches RHT, 1/2-28 TPI Short-stroke gas piston operation, providing enhanced reliability and reduced fouling compared to traditional direct impingement systems, ensuring smooth operation Dual feed accepts all AR-15/M16 magazines and M27 linked ammunition, offering exceptional versatility for rapid and efficient reloading Precision-machined 7075-T6 billet upper receiver, feed cover and charging handle, providing maximum durability and performance for your firearm Precision-machined billet steel feed tray, ensuring high-strength and reliability for the feeding system The finish includes manganese phosphate and type III, class 2 hard coat anodize black for maximum corrosion and wear resistance, ensuring longevity and resilience in harsh environments The full-auto bolt carrier ensures reliable and smooth cycling, providing a consistent shooting experience for those using automatic firing modes The handguard style features a MIL-STD-1913 rail at the 12 o'clock position and M-LOK slots at the 3, 6 and 9 o'clock positions, offering versatile accessory mounting options Adjustable sight set allows for fine-tuning sighting system for increased accuracy Quick-change barrel handle, enabling fast and efficient barrel swaps with minimal effort Ships with main action spring, bolt catch, carbine stock spacer, (100) M27 links and operator's manual, offering essential parts for assembling and maintaining the firearm system Made in the USA, this product is built with quality standards, reflecting excellence in American manufacturing