Springfield's Saint is the ideal refinement of the time-tested AR-15 design and represents everything that a defensive carbine should be. It features extra-tough, forged aircraft-grade 7075 T6 aluminum upper and lower receivers joined using the Accu-Tite system and Type III hard coat anodized finish. The exclusive Bravo PKMT handguard has an ultra-modern two-piece slim contour design with heat shield and Keymod attachment points. The 16" Chrome Moly Vanadium barrel is treated with Melonite and has a 1:8" twist rate for complete ammunition flexibility. The flat-top receiver is topped with Springfield Armory's low-profile flip-up dual aperture rear sight with 1/2 MOA windage adjustment capability, and an A2-style gas block post front sight. The Option Zero stock features an on-board magazine storage that can fit a 10-round magazine. This model's furniture has a black finish and included is one 10-round magazine.