Details
Davidson Defense Aftermath 10.5" 5.56 NATO Full Build Kit with SBA5 Brace | 4150 CMV Nitride | Carbine-Gas | FSB | Billet Slick Side | Quad-Rail
The Davidson Defense Aftermath with SBA5 Brace 10.5" full build kit is a comprehensive AR-15 pistol assembly designed for performance and versatility with streamlined slick side aesthetics. Built around a 10.5-inch AR-15 barrel made from 4150 Chrome Moly Vanadium steel with nitride finish and 1:8 twist rate, this kit is optimized for 5.56 NATO caliber ammunition from 55-grain to 77-grain projectiles. The carbine-length gas system with A2 front sight base ensures reliable cycling and provides a standard military-spec iron sight. The carbine-length 2-piece quad-rail handguard is constructed from aluminum, enabling flexible accessory attachment at multiple positions. The kit includes a 6061-T6 billet aluminum upper receiver with slick side design and black anodized finish, complete bolt carrier group made from 9310 alloy steel, Mil-Spec charging handle, standard carbine recoil buffer, and all necessary lower parts. The SB Tactical SBA5 stabilizing brace, crafted from nylon-reinforced polymer, provides improved stability and enhanced control. This full build kit offers gunsmiths a robust platform for customization and builds while ensuring a solid shooting experience. This kit includes everything except the lower receiver.
Key Features
- 10.5" Barrel: 4150 Chrome Moly Vanadium steel with nitride finish and 1:8 twist rate optimized for 5.56 NATO
- Carbine-Length Gas System: Reliable cycling with A2 front sight base (FSB) gas block for classic sight configuration
- Complete Bolt Carrier Group: Made from 9310 alloy steel for dependable operation and consistent cycling
- Mil-Spec Charging Handle: Standard Mil-Spec design for reliable operation and broad compatibility
- 6061-T6 Billet Aluminum Upper Receiver: Slick side design with black anodized finish for streamlined aesthetics
- Carbine-Length 2-Piece Quad-Rail Handguard: Aluminum construction for flexible accessory attachment
- SB Tactical SBA5 Stabilizing Brace: Nylon-reinforced polymer construction for improved stability
- Standard Carbine Recoil Buffer: Dependable buffer for consistent cycling performance
- A2 Front Sight Base: Standard military-spec FSB for proven sight configuration
- Complete Lower Parts Kit: Includes all necessary components for lower receiver assembly
- Full Build Kit: Includes everything to complete the build except the lower receiver
Perfect For
- Gunsmiths and Custom Builders seeking a comprehensive compact pistol build kit with streamlined slick side aesthetics and proven SBA5 brace
- Home Defense and CQB Applications where maneuverability, stability, and reliable cycling are critical
- Builders committed to robust platforms for customization with modern design elements
- Shooters wanting performance and versatility in a compact package with solid shooting experience
Barrel Construction and Nitride Finish
The 10.5-inch barrel is made from 4150 Chrome Moly Vanadium steel, a proven material choice for strength and durability in compact barrel configurations. The nitride finish enhances surface hardness and provides superior corrosion resistance, ensuring consistent performance across extended shooting sessions and varied environmental conditions. The 1:8 twist rate is optimized for 5.56 NATO caliber, stabilizing a wide range of projectile weights from lightweight 55-grain bullets for high-velocity applications to heavier 77-grain match projectiles. This versatile twist rate supports diverse shooting applications, delivering dependable performance and accuracy in the compact 10.5-inch configuration.
Carbine Gas System and Front Sight Base Design
The carbine-length gas system is optimized for shorter barrel lengths like 10.5 inches, ensuring reliable cycling with consistent extraction and ejection in compact configurations. The A2 front sight base (FSB) gas block serves dual purposes—functioning as both the gas block and providing a standard military-spec iron sight. This classic FSB configuration has been proven over decades of military use, offering robust construction, reliable performance, and a dependable backup sight system that requires no batteries or electronics. The A2 FSB maintains the traditional AR-15 aesthetic while providing proven functionality valued by shooters who prefer classic AR-15 designs with time-tested reliability.
Bolt Carrier Group and Charging Handle
The included complete bolt carrier group is made from 9310 alloy steel, a material selected for its exceptional strength and fatigue resistance under the high-pressure cycling demands of the AR-15 platform. This material provides excellent wear resistance and fatigue life, ensuring dependable operation across thousands of rounds with consistent extraction and ejection performance. Paired with a Mil-Spec charging handle, the complete upper ensures smooth, dependable operation and broad compatibility with aftermarket upgrades and accessories. The kit includes a standard carbine recoil buffer for consistent cycling performance, completing the buffer system for reliable firearm operation.
Billet Slick Side Upper Receiver
The 6061-T6 billet aluminum upper receiver offers a unique combination of strength and streamlined aesthetics. The slick side design eliminates the forward assist and ejection port cover, creating a clean, minimalist appearance that reduces weight and complexity while maintaining structural integrity. The black anodized finish provides enhanced corrosion resistance and a durable surface. Billet construction allows for tighter tolerances and enhanced machining detail compared to forged receivers, supporting precise fitment and consistent performance. The slick side configuration is particularly appealing to shooters who prioritize weight savings, simplified operation, and modern aesthetics, emphasizing streamlined performance in a robust platform for customization.
Quad-Rail Handguard and SBA5 Brace System
The carbine-length 2-piece quad-rail handguard is constructed from aluminum, providing four-sided Picatinny rail coverage at 12, 3, 6, and 9 o'clock positions. The 2-piece design allows for straightforward installation around the front sight base while enabling flexible accessory attachment. This quad-rail design allows for mounting of lights, laser devices, vertical grips, and other Picatinny-compatible accessories at multiple positions, allowing shooters to configure the platform to match their specific needs and maximize versatility. The SB Tactical SBA5 stabilizing brace is crafted from nylon-reinforced polymer, combining lightweight construction with impact resistance and durability. The SBA5 provides improved stability for compact pistol platforms, supporting enhanced shooter comfort and control during shooting while maintaining the lightweight characteristics critical for maneuverable pistol configurations, representing proven SB Tactical stabilizing brace technology.
Complete Build Package
The kit includes a complete lower parts kit with all necessary components for lower receiver assembly, providing gunsmiths with everything needed to complete the pistol build except the lower receiver itself. This full build kit offers gunsmiths a robust platform for customization and builds while ensuring a solid shooting experience. The combination of streamlined slick side upper design, quality components including 9310 alloy steel BCG, proven SBA5 brace technology, and flexible accessory mounting capabilities delivers a comprehensive solution for building a performance-driven AR-15 pistol platform optimized for versatility and reliable operation.
Follow safe handling practices and manufacturer instructions for assembly and use. Ensure compliance with all applicable federal, state, and local laws regarding pistol configurations and stabilizing braces. This kit is chambered in 5.56 NATO. This kit includes all necessary components to complete the build—lower receiver sold separately.
