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 precision-engineered entry in the modern sporting rifle category. Built by Springfield Armory, this rifle is designed around a direct impingement gas system and a 16-inch chrome-moly vanadium steel barrel with a 1:8 twist rate, optimized to stabilize a wide range of 5.56mm NATO and .223 Remington ammunition. The M-Lok free-float handguard provides continuous accessory mounting capability while reducing overall weight. Each rifle is assembled in the United States and undergoes a 10-point inspection before shipment, ensuring consistent headspace, bolt carrier group alignment, and gas port timing. The forged 7075 T6 aluminum upper and lower receivers are hard-coat anodized per MIL-SPEC standards, providing corrosion resistance and dimensional stability under sustained use.

Features & Specs

The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail incorporates several specification-driven components intended for duty, competition, or recreational use. The barrel is button-rifled with a melonite QPQ finish, extending service life and simplifying cleaning. The bolt carrier group features a shot-peened, high-pressure tested bolt with a Carpenter 158 steel extractor, and the carrier is chrome-lined for reliable cycling in adverse conditions. The single-stage trigger breaks at 5.5 to 6.0 pounds with minimal creep, measured at the factory. The M-Lok rail is 15 inches in length, machined from 6061 T6 aluminum, and includes a continuous Picatinny top rail for mounting optics. The six-position collapsible buttstock allows length-of-pull adjustment from 10.5 to 13.5 inches. Overall weight is 6 pounds 13 ounces unloaded, and overall length ranges from 32 to 35.5 inches.

• Barrel: 16-inch chrome-moly vanadium steel, 1:8 twist, melonite QPQ finish, M4 feed ramps
• Handguard: Free-float 15-inch M-Lok rail with full-length Picatinny top rail
• Receiver Set: Forged 7075 T6 aluminum, hard-coat anodized, T-marked upper receiver

Who It’s For

This Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail is suited for shooters who require a factory-assembled platform with verified headspace and gas system timing, without the need for aftermarket modifications to achieve reliable function. It is appropriate for law enforcement patrol rifle applications where consistent accuracy within 2 MOA at 100 yards is required using standard M855 or M193 ammunition. Competitive shooters in 3-Gun or tactical rifle divisions will find the M-Lok handguard facilitates rapid barrel cooling and accessory attachment for bipods, lights, or hand stops. For civilian owners seeking a primary defensive firearm, the rifle’s 16-inch barrel maintains ballistic performance at engagement distances common to home defense scenarios while remaining compliant with federal rifle length requirements. The single-stage trigger and adjustable stock accommodate shooters of varying hand size and shooting position preferences.

• Designed for shooters requiring verified factory headspace and gas system timing
• Suitable for law enforcement patrol, 3-Gun competition, and home defense applications
• Accommodates shooters of different stature with 3-inch stock adjustment range

Shipping & FFL

This Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-Lok rail will ship to a Federal Firearms License (FFL) holder in your state of residence. Upon placing an order, you must provide the name and contact information of a receiving FFL dealer who is willing to accept the transfer. We will verify that the FFL is current with the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) prior to shipment. It is your responsibility to confirm that the rifle complies with all state and local laws, including any restrictions on magazine capacity, barrel length, or feature configurations that may apply in your jurisdiction. Standard shipping is via a contracted carrier with adult signature required at delivery. Tracking information will be provided once the carrier has received the package. Please contact your chosen FFL dealer before ordering to confirm they will process the transfer for this specific firearm.

• Shipment to your chosen FFL dealer only; provide dealer license and contact details at checkout
• Adult signature required at delivery; verify state and local compliance before ordering
• Tracking information provided upon carrier pickup; standard processing time 1-3 business days