Description

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 benchmark in modern sporting rifle design. Built on a forged 7075 T6 aluminum receiver set, this platform delivers consistent performance through a mid-length gas system paired with a 16-inch chrome-moly vanadium barrel. The free-floating M-Lok handguard provides a rigid mounting surface for accessories while reducing overall weight. Each rifle is function-tested at the factory, ensuring reliable cycling with a wide range of 5.56mm NATO and .223 Remington ammunition. The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail includes a B5 Systems stock and grip, a nickel boron coated bolt carrier group, and a two-stage match trigger.

Features & Specs

The engineering behind the Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail prioritizes accuracy and durability under sustained use. The barrel features a 1:8 twist rate, optimizing stabilization for both 55-grain and 77-grain projectiles. The M-Lok handguard extends 12 inches, offering continuous attachment points for grips, lights, or lasers without contacting the barrel.

• Caliber: 5.56mm NATO / .223 Remington; barrel length: 16 inches with A2 flash hider; overall length: 32.5 inches to 35.75 inches with six-position adjustable stock
• Upper receiver: forged 7075 T6 aluminum with Type III hard coat anodizing; flat-top design with Picatinny rail; forward assist and dust cover included
• Bolt carrier group: nickel boron coated for reduced friction and corrosion resistance; chrome lined gas key; shot-peened and proof-tested bolt

• Trigger: two-stage match trigger with 4.5-pound to 5.5-pound pull weight; reduces creep and overtravel for precise shot placement
• Handguard: free-float M-Lok rail with continuous top Picatinny section; heat shield inside; slim profile for comfortable grip
• Weight: 6.75 pounds unloaded; overall length: 35.75 inches with stock fully extended

• Stock: B5 Systems Bravo six-position collapsible stock with rubber buttpad; grip: B5 Systems Type 23 pistol grip with textured surface
• Sights: includes Magpul MBUS Gen 2 flip-up rear and front sights; zeroed at the factory for 100 yards
• Finish: overall black hard coat anodized; barrel has Melonite QPQ finish for extended service life

Who It’s For

This rifle serves shooters requiring a duty-grade platform for competition, defensive use, or recreational marksmanship. The mid-length gas system reduces recoil impulse compared to carbine-length systems, making it suitable for shooters who spend extended periods at the range. The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail accommodates users who prefer a ready-to-run configuration without immediate aftermarket modifications. Law enforcement and security professionals will appreciate the reliability of the nickel boron BCG and the crisp two-stage trigger. New AR-15 owners benefit from the factory-assembled quality and included backup sights, while experienced shooters can leverage the M-Lok rail for customized accessory placement.

Shipping & FFL

This firearm ships to a Federal Firearms License (FFL) dealer in your area. After placing your order, provide the contact information of your chosen FFL holder. We verify the license prior to shipment. All federal, state, and local laws regarding firearm ownership and transfer apply. You are responsible for confirming that the Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail is legal to own in your jurisdiction before purchase. Standard shipping rates apply; signature may be required upon delivery. Average transit time is 3 to 7 business days after FFL verification is complete.