Strike Industries AR Castle Nut with Extended End Plate – TRIBUS Black (Model SI-AR-TRIBUS-BK | UPC 708747548457)
Upgrade your AR platform with the Strike Industries AR Castle Nut Extended End Plate (TRIBUS System) — an innovative, heavy-duty upgrade designed for improved functionality, durability, and modern aesthetics. Precision-engineered for AR-15 and AR-10 platforms, the Strike Industries TRIBUS Castle Nut and Extended End Plate combination provides enhanced versatility for sling attachment, superior strength, and sleek tactical styling. Whether you’re building a new rifle or upgrading your existing setup, this component delivers professional-grade performance and reliability trusted by shooters worldwide.
Innovative TRIBUS Design – Three Mounting Points for Ultimate Flexibility
The Strike Industries TRIBUS End Plate redefines versatility with its dual Quick Detach (QD) sling mounting points and center-mounted slot for traditional sling attachment. This 3-in-1 configuration allows shooters to choose between single-point and dual-point sling setups, giving you unmatched adaptability in both tactical and recreational environments. The QD sockets are reinforced for maximum strength and ensure smooth, snag-free sling operation.
Durable Steel Construction with Hard-Anodized Finish
Built to withstand the demands of combat, training, and field conditions, the Strike Industries Castle Nut and End Plate are crafted from high-quality steel for superior durability. The black anodized finish provides excellent corrosion resistance and a sleek, non-reflective appearance. Precision machining ensures a tight, secure fit on any mil-spec buffer tube assembly, making it one of the most rugged and reliable upgrades available for your AR platform.
Enhanced Functionality and Secure Lockup
The Strike Industries TRIBUS Castle Nut is designed with multi-point notches for precise staking and secure installation, preventing loosening under recoil or heavy use. The extended end plate ensures greater surface engagement with the receiver extension, enhancing overall structural integrity. This attention to detail provides shooters with maximum reliability, even under the toughest conditions.
Easy Installation and Compatibility
The SI-AR-TRIBUS-BK kit is compatible with most AR-15, AR-10, and M4/M16 platforms, fitting standard mil-spec buffer tubes. Installation is simple and straightforward using standard armorer’s tools. Whether you’re assembling a new build or upgrading an existing rifle, Strike Industries ensures a perfect fit and seamless integration with your firearm components.
Specifications
Manufacturer: Strike Industries
Model: AR Castle Nut with Extended End Plate – TRIBUS
Model Number: SI-AR-TRIBUS-BK
UPC: 708747548457
Material: Hardened Steel
Finish: Black Hard Anodized
Sling Mounts: Dual QD + Center Slot (3-Point System)
Compatibility: AR-15 / AR-10 / M4 / M16 Platforms
Installation: Fits Standard Mil-Spec Buffer Tubes
Tactical Advantages and Practical Benefits
Three sling attachment points for maximum versatility.
Reinforced QD sockets for secure sling retention.
Extended end plate enhances stability and aesthetics.
Precision-fit castle nut for reliable buffer tube lockup.
Durable black anodized coating for corrosion protection and stealthy appearance.
Designed by Strike Industries – a trusted name in firearm innovation and performance.
Designed for Modern Shooters
Whether you’re a tactical operator, law enforcement officer, or civilian shooter, the Strike Industries TRIBUS Castle Nut & End Plate Set offers the perfect blend of strength, innovation, and style. Its multi-point sling system ensures quick transitions between carry positions, while its rugged construction guarantees lasting reliability. It’s the ideal upgrade for any shooter who demands the best from their AR platform.
Why Choose Strike Industries
Strike Industries is known for pushing the limits of firearm engineering with products that enhance performance, ergonomics, and modularity. Every Strike Industries part is built by shooters for shooters — designed to perform flawlessly in real-world conditions. The TRIBUS Castle Nut and End Plate System exemplifies that mission, combining cutting-edge design with practical functionality and unmatched strength.
Order Yours Today
Take your AR build to the next level with the Strike Industries AR Castle Nut Extended End Plate TRIBUS Black (SI-AR-TRIBUS-BK). Enjoy increased sling versatility, durable construction, and tactical styling that sets your rifle apart from the rest. Whether for range use, duty, or defense, this upgrade ensures your weapon is mission-ready every time.
Innovative design. Tactical performance. Unmatched reliability.
The End
