Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture

Overview

The Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture represents a purpose-built platform engineered for reliability and accuracy. Chambered in 5.56 NATO, this rifle integrates a direct impingement gas system with a carbine-length gas tube, operating through a 16-inch CMV (Chromoly Vanadium) barrel with a 1:8 twist rate. The barrel features a Melonite QPQ finish for enhanced corrosion resistance and extended service life. The forged 7075 T6 aluminum upper and lower receivers provide a structurally sound foundation, while the B5 Systems furniture set delivers ergonomic control in dynamic shooting scenarios. This configuration is factory-assembled by Springfield Armory and ships as a complete rifle, not a receiver set.

• Caliber: 5.56 NATO (accepts .223 Remington)
• Barrel Length: 16 inches, CMV steel with Melonite QPQ finish
• Twist Rate: 1:8, optimized for 55-77 grain projectiles
• Gas System: Carbine length, direct impingement
• Receiver Material: Forged 7075 T6 aluminum, Type III hard coat anodized

Features & Specs

This Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture is equipped with a free-float M-Lok handguard constructed from 6061 aluminum, providing continuous attachment points for accessories while minimizing weight. The B5 Systems buttstock includes a friction lock system to reduce stock wobble, and the B5 pistol grip features an extended beavertail for a higher grip position. The bolt carrier group is shot-peened and MPI-tested, featuring a Carpenter 158 steel bolt and a chrome-lined carrier interior. The muzzle device is a Springfield Armory original flash hider, indexed to standard 1/2×28 threading. The trigger group is a mil-spec single-stage unit with a nickel-teflon coated trigger and hammer for a smoother pull weight of approximately 6.5 pounds.

• Handguard: 15-inch free-float M-Lok, 6061 aluminum, slim profile
• Bolt Carrier Group: Carpenter 158 steel bolt, shot-peened, chrome-lined carrier
• Furniture: B5 Systems SOPMOD buttstock, B5 Type 23 pistol grip, B5 handstop
• Trigger: Mil-spec single-stage, nickel-teflon coated, 6.5 lb pull
• Muzzle: Springfield Armory flash hider, 1/2×28 threaded barrel

• Overall Length: 32.5 inches (collapsed) to 35.75 inches (extended)
• Weight: 6 pounds 12 ounces (unloaded, without optics)
• Sights: None included, flat-top upper receiver with Picatinny rail
• Magazine: One 30-round Magpul PMAG
• Safety: Ambidextrous selector lever

Who It's For

The Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture is designed for shooters who require a ready-to-use carbine with upgraded furniture from the factory. This rifle suits home defense applications where short overall length and maneuverability are priorities, as well as range training for shooters who prefer the direct impingement platform over piston systems. The B5 furniture set offers a distinct advantage for users with smaller hand sizes who appreciate the reduced circumference of the Type 23 grip. Law enforcement professionals and civilian marksmen seeking a lightweight, low-maintenance rifle with proven mil-spec components will find this configuration appropriate for patrol use or recreational shooting. The 1:8 twist rate provides flexibility across common bullet weights, making it suitable for shooters who load their own ammunition or purchase various factory loads.

Shipping & FFL

This firearm ships to a Federal Firearms License (FFL) holder in your state. Upon purchase, we will contact the FFL dealer you select during checkout to verify their license is current and on file. You must arrange shipment to a licensed dealer who can complete the ATF Form 4473 and NICS background check before transfer. Some states and localities may have additional restrictions regarding magazine capacity or feature configurations—please check your local laws before ordering. We ship via UPS Next Day Air or FedEx Priority Overnight to ensure secure and traceable delivery. Do not ship to a residential address; all long gun deliveries require a physical storefront FFL location. Your FFL dealer may charge a separate transfer fee, which is not included in the product price. Allow 3-7 business days for processing and shipping after FFL verification is complete.