About this product

Springfield Saint 5.56mm Semi-Automatic AR-15 Rifle with M-Lok Rail

Overview

The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail represents a direct evolution of the modern sporting rifle platform, engineered for shooters who demand precision and reliability from a factory-built system. Chambered in 5.56mm NATO, this rifle integrates a free-floating M-Lok handguard, a pinned low-profile gas block, and a carbine-length gas system to deliver consistent cycling and enhanced accuracy. The Saint series is assembled in Geneseo, Illinois, using 4140 steel barrels and Mil-Spec 7075 T6 aluminum receivers, ensuring dimensional consistency and corrosion resistance. Each rifle is test-fired at the factory with a five-round group verification, confirming mechanical accuracy before shipment. The M-Lok rail system provides continuous attachment points for lights, lasers, or vertical grips without adding bulk, while the 1:8 twist rate barrel stabilizes a wide range of bullet weights from 55 to 77 grains. This configuration balances maneuverability with terminal performance, suitable for both flat-range precision work and dynamic shooting scenarios.

Features & Specs

The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail is built around a forged 7075 T6 upper and lower receiver set with a Type III hard coat anodized finish. The barrel is a 16-inch, chrome-moly vanadium steel with a 1:8 twist, finished with a Melonite treatment for extended service life. The bolt carrier group is shot-peened and high-pressure tested, featuring a Carpenter 158 steel bolt and a properly staked gas key. The M-Lok free-float handguard extends to 15 inches, with a continuous Picatinny top rail for optics mounting. The rifle includes a Bravo Company MOD 0 pistol grip, an A2-style flash hider, and a six-position collapsible stock. Trigger pull is a single-stage, Mil-Spec unit breaking at 5.5 to 6.5 pounds. Overall length is adjustable from 32.5 to 35.5 inches, with an unloaded weight of 6 pounds 11 ounces.

• Caliber: 5.56mm NATO / .223 Remington; 1:8 twist, 16-inch barrel with Melonite finish
• Receiver: Forged 7075 T6 aluminum, Type III hard coat anodized, M-Lok free-float handguard
• Bolt Carrier Group: Carpenter 158 steel bolt, shot-peened, high-pressure tested, properly staked gas key
• Trigger: Single-stage Mil-Spec, 5.5-6.5 lb pull; six-position collapsible stock
• Included: One 30-round Magpul PMAG, soft case, operator manual, cable lock

Who It's For

This Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail is intended for civilian shooters seeking a factory-assembled, ready-to-use rifle for target shooting, competition, or ranch defense. The 1:8 twist and free-float handguard make it suitable for shooters who want to mount magnified optics or red-dot sights and maintain consistent zero under field conditions. Law enforcement professionals and security personnel may also find the Saint suitable for patrol rifle applications, given its reliability testing and Mil-Spec components. This rifle is not recommended for shooters who require a heavy-contour barrel for sustained rapid fire or those seeking a dedicated long-range precision platform beyond 600 yards. It is a general-purpose, mid-weight rifle suited for shooters who prioritize a balance of accuracy, weight, and modular attachment capability.

• Civilian target shooters and competitors requiring a reliable, factory-tested AR-15 platform
• Ranch or property owners needing a versatile rifle for varmint control or defensive use
• Patrol officers or security personnel seeking a lightweight, rail-equipped carbine

Shipping & FFL

This Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail will ship to a licensed Federal Firearms License (FFL) holder in your state. After placing your order, you will receive an order confirmation and a request to provide your chosen FFL dealer's contact information. We verify each FFL's current license with the ATF before shipping. Shipment is via a common carrier with adult signature required. You must comply with all federal, state, and local laws regarding firearm ownership, including any applicable waiting periods, background checks, or magazine capacity restrictions. It is your responsibility to confirm that this rifle is legal to possess in your jurisdiction before purchasing. We do not ship to P.O. boxes; a physical street address for the receiving FFL is required. Returns or cancellations after shipment is not accepted due to federal firearms transfer regulations.

• Shipped to your chosen FFL dealer with valid, current license on file
• Adult signature required at delivery; no P.O. box shipments
• Buyer assumes responsibility for compliance with all state and local laws