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 reliable, duty-grade platform designed for American shooters who demand performance without compromise. Built by Springfield Armory, this rifle combines proven mil-spec engineering with modern upgrades straight from the factory. Chambered in 5.56mm NATO, it delivers consistent accuracy and cycling reliability across a wide range of ammunition types. The free-float M-LOK handguard provides ample real estate for mounting lights, grips, or bipods while keeping the barrel free for improved accuracy. Whether you are building out a patrol rifle or upgrading your home defense setup, the Springfield Saint 5.56mm Semi-Automatic AR-15 Rifle with M-LOK Rail offers a complete package that requires no additional modifications to run hard out of the box.

Features & Specs

The Springfield Saint 5.56mm Semi-Automatic AR-15 Rifle with M-LOK Rail is engineered around a 16-inch chrome-moly vanadium barrel with a 1:8 twist rate, optimized for stabilizing both 55-grain and 62-grain projectiles. The carbine-length gas system is paired with a low-profile gas block tucked under the 12-inch M-LOK free-float rail. The upper receiver features a flat-top configuration with a removable carry handle rear sight, while the lower receiver houses a single-stage trigger with a crisp break. The six-position collapsible stock and A2-style pistol grip provide an adaptable fit for different shooters. The rifle weighs 6.5 pounds unloaded, making it maneuverable in tight spaces without sacrificing stability during sustained fire.

• Caliber: 5.56mm NATO (also accepts .223 Remington)
• Barrel: 16-inch, chrome-moly vanadium, 1:8 twist, Melonite finish
• Handguard: 12-inch free-float M-LOK aluminum rail with heat shield
• Gas System: Carbine-length, direct impingement with low-profile block
• Stock: Six-position collapsible, Mil-Spec buffer tube
• Sights: A2-style front post and flip-up rear aperture

Who It’s For

The Springfield Saint 5.56mm Semi-Automatic AR-15 Rifle with M-LOK Rail is built for the shooter who wants a no-frills, ready-to-run carbine that does not require aftermarket upgrades to perform. It suits law enforcement officers, security professionals, and civilian shooters who need a dependable rifle for training, competition, or home defense. The M-LOK rail system appeals to users who plan to attach accessories like weapon lights, lasers, or vertical grips without needing to replace the handguard. If you are a first-time AR-15 buyer looking for a quality entry point, or an experienced shooter who wants a spare rifle that mirrors your primary duty setup, this model delivers the same reliability as higher-priced builds at a more accessible price point. The 5.56mm chamber allows you to train affordably with .223 Remington while retaining the ability to fire military-spec 5.56mm ammunition for defensive use.

• Ideal for home defense, patrol, and range training
• Suitable for shooters who prefer a free-float handguard without a front sight base
• Works for left-handed and right-handed shooters with standard controls

Shipping & FFL

This firearm ships to a Federal Firearms License (FFL) dealer of your choice. After placing your order, we will contact you to confirm your chosen receiving dealer. You must verify that your selected FFL is willing to accept the transfer. The firearm will be shipped to that dealer, and you will complete a federal background check (Form 4473) at pickup. Shipping is not available to P.O. boxes or international addresses. Some states and municipalities have additional restrictions on AR-15 style rifles; it is your responsibility to ensure compliance with all local, state, and federal laws before ordering. For customers in states with magazine capacity limits, this rifle may ship with a reduced-capacity magazine where required by law. Please allow 3-7 business days for processing and shipping from our warehouse to your FFL.

• Shipped to your chosen FFL dealer only
• Background check required at pickup
• Buyer responsible for local compliance