About this product

With the success of Springfield Armory’s SAINT™ AR-15 Pistol in 5.56, more people than ever are requesting variations to the original version. The newest iteration in .300 BLK harnesses the power of this combat-proven round for increased capability and versatility in a compact platform. The SAINT AR-15 Pistol features a rugged SB Tactical SBX-K forearm brace to reduce size, stabilize recoil, an Nationwide shipping. Order from anywhere in the US.

Springfield SAINT 300 Blackout Semi-Automatic Pistol with 9-Inch Barrel

The Springfield SAINT 300 Blackout semi-automatic pistol with 9-inch barrel represents a purpose-built platform designed for shooters who demand compact power and reliable subsonic performance. Chambered in .300 AAC Blackout, this pistol bridges the gap between a full-size rifle and a traditional handgun, offering substantial ballistic capability in a highly maneuverable package. Built on a forged aluminum lower receiver and a precision-machined upper, every component is engineered to deliver consistent cycling and accuracy under varied conditions. Whether suppressed or unsuppressed, the 9-inch barrel optimizes velocity for both supersonic and subsonic loads, making this firearm a versatile choice for defensive use and range training. The SAINT series is known for its attention to detail, and this model continues that tradition with a crisp trigger, durable finish, and thoughtful ergonomics that facilitate rapid target acquisition.

Overview

The Springfield SAINT 300 Blackout semi-automatic pistol with 9-inch barrel is a direct-impingement operated pistol that chambers the versatile .300 AAC Blackout cartridge. It features a 9-inch CMV barrel with a 1:8 twist rate, optimized to stabilize a wide range of bullet weights from 110 to 220 grains. The pistol-length gas system is tuned specifically for this barrel length to ensure reliable cycling with both standard and suppressed configurations. The upper receiver is topped with a flat-top Picatinny rail for mounting optics, while the lower receiver includes an integrated trigger guard and a flared magazine well for efficient reloads. Weighing approximately 5.5 pounds unloaded, this pistol offers a balanced feel that reduces fatigue during extended use. The overall length of 19.5 inches and a height of 8.5 inches make it compact enough for vehicle storage or home defense scenarios, yet it retains the ballistic performance of a short-barreled rifle platform.

Features & Specs

• Barrel and Gas System: 9-inch chrome-moly vanadium (CMV) barrel with Melonite finish, 1:8 twist rate, and a pistol-length gas system with a low-profile gas block. This configuration ensures reliable cycling with supersonic and subsonic ammunition, including suppressed operation.
• Receiver Set: Forged 7075 T6 aluminum upper and lower receivers with hard-coat anodized finish. The upper features a forward assist, ejection port cover, and a continuous Picatinny rail. The lower includes an integral trigger guard and a flared magazine well for faster reloads.
• Trigger and Controls: A single-stage trigger with a 5.5-pound pull weight, nickel-boron coated for smooth engagement. Ambidextrous safety selector and a standard mil-spec charging handle provide left- and right-handed operation. The pistol grip is a BCM Gunfighter Mod 3 for enhanced ergonomics.
• Muzzle and Handguard: A 2.5-inch flash can muzzle device reduces signature and concussion. A free-floating M-Lok handguard with a continuous top rail offers modular attachment points for lights, grips, or bipods. The handguard is 8 inches long and stays clear of the gas block.
• Magazine and Sights: Ships with one 30-round Magpul PMAG in .300 Blackout configuration. No iron sights are included; the Picatinny rail is compatible with most red dots, holographic sights, or magnified optics. The lower receiver accepts standard AR-15 pistol grips and buttstocks (if SBR conversion is done per NFA regulations).

Who It’s For

This pistol is designed for shooters who require a compact, high-energy platform that excels in close-quarters situations. It is ideal for home defense professionals who want a firearm that can be easily maneuvered in tight spaces while delivering terminal performance exceeding that of most handgun calibers. Suppressor owners will find the 9-inch barrel and pistol-length gas system particularly well-suited for subsonic ammunition, reducing both noise and recoil. Law enforcement personnel and security contractors operating in urban environments will appreciate the balance of size and power. Additionally, competitive shooters looking for a unique pistol-caliber carbine alternative for tactical matches or steel challenges will benefit from the flat shooting characteristics of the .300 Blackout cartridge. This firearm is not intended for casual plinking at extended ranges due to the ballistic drop of subsonic rounds, but it excels within 150 yards for defensive and training applications.

Shipping & FFL

This product ships directly from our warehouse to a Federal Firearms License (FFL) dealer of your choice. Upon placing your order, you must provide the contact information for a licensed FFL holder in your state who is willing to accept the transfer. We will verify the FFL details and ship the firearm within two business days of order confirmation. All federal, state, and local laws regarding the purchase and possession of handguns apply. It is the buyer’s responsibility to ensure compliance with all applicable regulations, including age requirements, residency restrictions, and any waiting periods. For customers in states with additional magazine capacity limits, the included magazine will be replaced with a compliant version if necessary. Please contact our customer service team with any specific shipping questions prior to ordering.