Details
Davidson Defense Safehouse 10.5" Pistol-Gas .300 Blackout AR-15 Upper Build Kit | 1:8 Twist | Quad Rail Handguard | Adjustable Gas Block
This Davidson Defense Safehouse upper build kit delivers an efficient and versatile upper assembly for .300 Blackout applications. Built around a 10.5-inch .300 Blackout barrel with government profile crafted from 4150 Chrome Moly Vanadium steel with nitride finish and 1:8 twist rate, this upper ensures enhanced longevity and corrosion resistance. The pistol-length gas system with adjustable low-profile gas block located under the handguard ensures reliable cycling and allows fine-tuning for various ammunition types and suppressor configurations. Equipped with a 7075-T6 aluminum upper receiver with anodized finish, carbine-length quad-rail handguard made from aluminum for accessory attachment and heat management, mil-spec charging handle, and a complete 9310 alloy steel bolt carrier group with nitride finish, this suppressor-ready upper is designed for flexibility and performance in various shooting scenarios.
Key Features
- 10.5" Government-Profile Barrel – 4150 CrMoV steel with nitride finish and 1:8 twist rate
- Adjustable Low-Profile Gas Block – Fine-tuning capability for various ammunition and suppressor configurations (located under handguard)
- Front Sight Post – Integrated sight (not used as gas block; gas block is located under handguard)
- Pistol-Length Gas System – Reliable cycling optimized for 10.5-inch barrel
- Carbine-Length Quad-Rail Handguard – Aluminum construction with mounting points on all four sides
- 7075-T6 Aluminum Upper Receiver – Anodized finish for strength and reliability
- Complete 9310 Alloy Steel Bolt Carrier Group – Nitride finish for enhanced durability
- Mil-Spec Charging Handle – Included for smooth operation
- Suppressor-Ready Design – Flexible for various shooting scenarios
Perfect For
- .300 Blackout upper assemblies for suppressed and unsuppressed shooting
- Shooters requiring adjustable gas systems with quad-rail versatility
- Tactical applications needing extensive accessory mounting on all four sides
- Builders seeking a complete upper build kit ready for installation
.300 Blackout Government-Profile Barrel
The 10.5-inch government-profile barrel is crafted from durable 4150 Chrome Moly Vanadium steel with a nitride finish for enhanced longevity and corrosion resistance. The government profile provides reliable durability while maintaining manageable weight for pistol configurations. The 1:8 twist rate provides reliable 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.
Adjustable Low-Profile Gas Block
The adjustable low-profile gas block is located under the handguard and allows for fine-tuning of gas flow, ensuring reliable cycling with various ammunition types and suppressor configurations. 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 optimize cycling with heavy subsonic ammunition when suppressed, then adjust for reliable operation with supersonic loads or unsuppressed shooting. This suppressor-ready design provides flexibility for different shooting scenarios, from tactical applications to recreational range use. Note: The front sight post 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 is made from aluminum and offers ample attachment points on all four sides for accessories. Picatinny rails provide extensive mounting options for lights, lasers, foregrips, pressure switches, and other tactical gear exactly where you need them. This design also helps manage heat dispersion during sustained shooting sessions, allowing heat to dissipate more effectively than solid handguards. The quad-rail versatility is particularly valuable for suppressor-host configurations, night vision setups, or any build requiring multiple accessories positioned around the compact upper assembly.
Complete Upper Assembly Components
This upper includes a 7075-T6 aluminum upper receiver with an anodized finish for strength and reliability. The complete bolt carrier group is made from 9310 alloy steel with a nitride finish for exceptional hardness, corrosion resistance, and reliable cycling with .300 Blackout ammunition. The nitride finish enhances durability and extends component life even under demanding use. The included mil-spec charging handle provides smooth operation for quick manipulation during shooting sequences, making this upper build kit ready for installation on your lower receiver.
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 with your lower receiver before installation.
