Description

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

Overview

When you pick up the Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-LOK rail, the first thing you notice is the balance. Springfield Armory built this rifle to bridge the gap between a no-frills entry-level AR and a custom shop build. It chambers the ubiquitous 5.56mm NATO round, runs on a direct impingement gas system, and comes ready for optics, lights, and grips right out of the box. The M-LOK free-float handguard keeps weight down while giving you plenty of real estate for accessories, and the pinned low-profile gas block keeps the sight plane clean. Whether you are a first-time AR owner or a seasoned shooter looking for a reliable workhorse, the Springfield Saint delivers consistent performance without the premium price tag of a full custom rig.

Features & Specs

The Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-LOK rail is built with combat-proven components and modern upgrades. The barrel is cold hammer-forged and finished with a Melonite treatment for extended life and corrosion resistance. The bolt carrier group is shot-peened and MPI-tested, and the trigger is a nickel-boron coated single-stage unit that breaks clean at around 5.5 pounds. The M-LOK rail itself is a slim 15-inch design that attaches to a proprietary barrel nut, and the rifle ships with a B5 Systems stock and grip for immediate comfort.

• Caliber: 5.56mm NATO (accepts .223 Remington)
• Barrel: 16-inch cold hammer-forged, 1:8 twist, Melonite finish
• Handguard: 15-inch free-float M-LOK aluminum rail with continuous top Picatinny
• Gas system: Mid-length direct impingement with pinned low-profile gas block
• Bolt carrier group: 8620 steel, shot-peened, magnetic particle inspected, with Carpenter 158 steel bolt
• Trigger: Nickel-boron coated single-stage, 5.5-pound pull
• Furniture: B5 Systems Type 23 grip and B5 Sopmod stock
• Weight: 6.5 pounds (unloaded)
• Overall length: 32.5 to 35.75 inches (collapsible stock)

Who It Is For

This Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-LOK rail suits a broad range of shooters. If you are building your first patrol rifle and want something that works from the factory without swapping parts, this is a strong contender. The mid-length gas system softens recoil compared to carbine-length setups, making it more pleasant for new shooters and more controllable for rapid follow-up shots. Experienced shooters will appreciate the upgraded trigger, the Melonite barrel, and the M-LOK rail that takes standard accessories without adapters. It also works well for hog hunting, ranch defense, and three-gun matches where reliability and accuracy matter more than flash. If you prefer a free-floated barrel for consistent accuracy but do not want to assemble your own upper, this rifle takes the guesswork out of the equation.

• First-time AR buyers wanting a ready-to-shoot rifle with quality upgrades
• Shooters who value a free-float M-LOK handguard for mounting lights, lasers, or bipods
• Hunters and varmint control using 5.56mm or .223 ammunition
• Competitors in tactical or multi-gun matches who need a reliable out-of-box platform

• Mid-length gas system for smoother cycling and reduced felt recoil
• B5 Systems furniture provides a solid cheek weld and positive grip texture
• Nickel-boron trigger improves consistency over standard mil-spec triggers

Shipping & FFL

We ship the Springfield Saint 5.56mm semi-automatic AR-15 rifle with M-LOK rail to your chosen Federal Firearms License (FFL) holder. After you place your order, we will ask for a copy of your FFL dealer’s license. Please contact your local FFL to confirm they accept shipments from online retailers and will process the transfer. Standard shipping rates apply, and we do not ship to P.O. boxes. Once the rifle arrives at your dealer, you will complete a background check and any applicable state waiting period before taking possession. It is your responsibility to verify that this rifle is legal in your state and municipality before purchasing. We do not ship to California, New York City, or any jurisdiction with restrictions on standard-capacity magazines or AR-15 style rifles unless the FFL confirms compliance. For questions about your specific FFL or shipping timeline, reach out to our customer service team before completing checkout.