The Springfield Armory SAINT AR-15 rifle is a reliable and versatile semi-automatic firearm, ideal for both self-defense and recreational shooting. Chambered in .223 Remington or 5.56x45mm NATO, this rifle features a forged upper receiver made from Type III hard-coat anodized 7075 T6 aluminum. The lower receiver is also forged from the same durable material, with an Accutite tension system for added reliability. With its 16-inch chrome moly vanadium barrel, this rifle strikes a balance between compact portability and rugged performance. The B5 Systems M-Lok furniture provides ample customization options, while the direct impingement operating system ensures superlative reliability. Fast shipping is available on this product, making it easy to get your hands on this affordable and on-sale firearm. Product Features and Specifications: Caliber: 5.56x45mm NATO/.223 Remington Upper Receiver: Forged Type III Hard-Coat Anodized, 7075 T6 Aluminum Lower Receiver: Forged Type III Hard-Coat Anodized, 7075 T6 Aluminum with Accutite Tension System Barrel Material: Chrome Moly Vanadium Twist: 1:8 Barrel Length: 16 Inches Muzzle Device: A2 Flash Hider Gas System: Direct Impingement Mid-Length Pinned Gas Block Trigger: Nickel-Boron Coated GI Trigger Sights: A2 Front Sight and Low-Profile Adjustable Flip-Up Rear