Armalite M15 5.56mm Nato comes as is with Optic. Engineered for versatility and built on ArmaLite's legacy of reliability, the M15 is a compact tactical rifle that balances accuracy with maneuverability. The 16? stainless steel barrel offers consistent ballistic performance while the 15? tactical handguard provides abundant M-LOK attachment points for lights, lasers, grips, and accessories. A full-length MIL-STD 1913 top rail gives you ample real estate for optics and backup sights.