Details
Davidson Defense Safehouse 10.5" .300 Blackout AR-15 Pistol Full Build Kit | SBA3 Adjustable Brace | 1:8 Twist | Quad Rail Handguard | Adjustable Gas Block
This Davidson Defense Safehouse full build kit is engineered for versatility and reliability in .300 Blackout applications. Built around a compact 10.5-inch barrel with front sight base crafted from durable 4150 Chrome Moly Vanadium steel with nitride finish and 1:8 twist rate, this kit optimizes projectile stabilization across subsonic and supersonic loads. The premium low-profile adjustable gas block located under the handguard ensures smooth operation with suppressors and various ammunition types. The carbine-length quad-rail handguard allows for extensive accessory customization on all four sides, while the 7075-T6 aluminum upper receiver includes M4 feed ramps for reliable feeding. Equipped with the SB Tactical SBA3 adjustable pistol stabilizing brace for enhanced stability, mil-spec charging handle, and complete 9310 alloy steel bolt carrier group, this suppressor-ready pistol delivers dependable performance and freedom for an optimized shooting experience.
Key Features
- 10.5" .300 Blackout Barrel – 4150 CrMoV steel with nitride finish and 1:8 twist rate for improved longevity
- Premium Low-Profile Adjustable Gas Block – Smooth operation with suppressors and ammunition versatility (located under handguard)
- Front Sight Base – Integrated aiming solution (not used as gas block; gas block is located under handguard)
- Carbine-Length Quad-Rail Handguard – Extensive accessory customization on all four sides
- 7075-T6 Aluminum Upper Receiver – M4 feed ramps for reliable feeding
- SB Tactical SBA3 Adjustable Pistol Stabilizing Brace – Enhanced stability without compromising mobility
- Complete 9310 Alloy Steel Bolt Carrier Group – Dependable performance and reliable cycling
- Mil-Spec Charging Handle – Smooth operation included
- Suppressor-Ready Design – Optimized shooting experience for various applications
Perfect For
- Shooters seeking versatility and reliability in .300 Blackout pistol platforms
- Builders who want the proven SB Tactical SBA3 adjustable brace design
- Tactical applications requiring adjustable gas for suppressed shooting
- Those needing extensive quad-rail mounting for lights, lasers, and accessories
4150 CrMoV Barrel with Front Sight Base
The compact 10.5-inch barrel is built from durable 4150 Chrome Moly Vanadium steel with a nitride finish for improved longevity and corrosion resistance. The 1:8 twist rate optimizes projectile stabilization for .300 Blackout ammunition across both subsonic loads (typically 190-220 grains) and supersonic loads (110-125 grains). This versatility makes the barrel equally capable for suppressed subsonic shooting with minimal sound signature and high-velocity supersonic applications for maximum energy delivery. The front sight base provides an integrated aiming solution that requires no batteries and remains functional in all conditions, offering reliable backup sighting capability alongside optics.
Premium Low-Profile Adjustable Gas Block
The premium low-profile adjustable gas block is located under the handguard and ensures smooth operation with suppressors and various ammunition types. This adjustability is essential for .300 Blackout platforms that may run both subsonic and supersonic loads, with or without a suppressor. By adjusting gas flow, you can ensure proper cycling with heavy subsonic ammunition when suppressed, then adjust for reliable operation with supersonic loads or unsuppressed shooting. This suppressor-ready design provides an optimized shooting experience across diverse applications, from tactical scenarios to recreational range use. Note: The front sight base is not used as a gas block; the adjustable gas block is located under the handguard.
Carbine-Length Quad-Rail Handguard
The carbine-length quad-rail handguard allows for extensive accessory customization on all four sides. Picatinny rails provide comprehensive mounting options for lights, lasers, foregrips, pressure switches, and other tactical gear exactly where you need them. This maximum mounting flexibility is particularly valuable for suppressor-host configurations, night vision setups, or any build requiring multiple accessories positioned around the compact pistol platform. The quad-rail design enables complete customization for your specific shooting requirements, whether tactical, hunting, or recreational applications.
SB Tactical SBA3 Adjustable Pistol Stabilizing Brace
The SB Tactical SBA3 adjustable pistol stabilizing brace provides enhanced stability without compromising mobility. The SBA3 features five-position adjustability for customizable length of pull, allowing you to dial in optimal fit for different shooting positions and shooter preferences. The split-tube design with adjustable nylon straps offers improved stability during use while maintaining the lightweight profile essential to pistol configurations. The SBA3's proven design has become an industry standard for AR pistol builds, offering shooters a reliable platform for controlled shooting and improved accuracy without sacrificing the compact maneuverability that makes pistol platforms valuable.
Complete Upper Assembly and BCG
This full build kit includes a 7075-T6 aluminum upper receiver with M4 feed ramps that guide cartridges smoothly from magazine to chamber, ensuring reliable feeding across various .300 Blackout magazines and ammunition types. The complete bolt carrier group is made from 9310 alloy steel for exceptional hardness, corrosion resistance, and dependable performance with .300 Blackout's unique operating characteristics. The mil-spec charging handle provides smooth operation for quick manipulation during shooting sequences. All components are engineered for freedom and versatility, working together seamlessly to deliver reliable cycling and consistent performance across diverse shooting applications and conditions.
Always follow safe handling and manufacturer instructions.
Ensure compliance with all applicable federal, state, and local laws.
If using a suppressor, verify proper gas system adjustment for reliable cycling with your specific ammunition and suppressor combination.
Confirm fitment and compatibility with your lower receiver and brace usage regulations before assembly.
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