Strike Industries TRIBUS Enhanced Castle Nut & End Plate – Premium AR Upgrade for Strength, Style & Advanced Functionality
Upgrade your AR-platform rifle with the Strike Industries TRIBUS Enhanced Castle Nut & End Plate (ARTRIBUSRED)—a highly engineered, visually striking, and performance-driven buffer tube upgrade that enhances both durability and functionality. Designed for shooters who want more than just a standard Mil-Spec part, the TRIBUS system offers improved staking points, sling mounting versatility, and a brilliant anodized red finish that brings custom flair to any AR build.
Whether you’re assembling a precision rifle, a competition blaster, or a standout custom showpiece, this enhanced castle nut and end plate combo provides rock-solid reliability with modern tactical features you won’t find in standard parts.
Precision-Engineered Enhanced Castle Nut – Strong, Secure & Built to Last
Strike Industries designed the TRIBUS castle nut to exceed the strength and utility of traditional Mil-Spec components. Machined from high-strength steel and engineered with enlarged staking notches, it ensures your buffer tube remains firmly secured even through heavy recoil, high round counts, and intense field conditions.
Castle Nut Highlights:
Improved staking points for superior retention
Precision-machined durability
Engineered to withstand repeated high-impact use
Ensures reliable buffer tube stability
This enhanced castle nut keeps your AR’s receiver extension locked down tight under any conditions.
Multi-Function End Plate – QD-Ready With Ambidextrous Sling Options
The TRIBUS end plate expands your sling mounting options with a versatile, shooter-friendly design. Strike Industries integrates multiple attachment points to support a wide range of tactical setups.
End Plate Features:
Built-in QD sling swivel socket for rapid attachment
Ambidextrous sling compatibility for left- and right-handed shooters
Reinforced construction for long-term durability
Optimized geometry to reduce rotation and minimize wear
Whether you use a single-point sling or want a quick-detach setup, the TRIBUS end plate supports your mission.
Red Anodized Finish – Add Style to Your AR Build
Stand out from the crowd with the TRIBUS’ eye-catching red anodized finish. Perfect for enthusiasts building a color-matched rifle or competitors wanting standout gear, this durable finish:
Provides corrosion resistance
Prevents premature wear
Enhances visual appeal
Complements red-anodized triggers, safeties, mag releases & furniture
It’s the perfect blend of tactical performance and custom aesthetics.
Designed for AR-Platform Rifles
Compatible with AR-15 and AR-10 systems using a Mil-Spec buffer tube, the Strike Industries TRIBUS Enhanced Castle Nut & End Plate is ideal for:
Rifle builds
Carbine builds
Pistol configurations
Modern sporting rifles
Tactical and duty setups
Competition rifles
If your AR uses a buffer tube, this upgrade fits—and improves it.
Easy Installation With Professional-Level Results
The TRIBUS set installs like a standard castle nut and end plate but offers significantly better performance. While a standard armorer’s wrench works, Strike Industries recommends their proprietary tool for best results.
Installation requires:
Removing the existing castle nut and end plate
Securing the new end plate
Threading and torquing the enhanced castle nut
Staking into one of the improved stabilization points
Even hobby builders can achieve a secure, professional-grade installation.
Key Features
Model: ARTRIBUSRED
UPC: 708747548631
Color: Red anodized
Compatibility: AR-15 / AR-10 / Mil-Spec receiver extensions
Includes: Enhanced castle nut + multi-function end plate
Features: QD sling socket, ambidextrous mounting points, reinforced design
Material: High-strength steel (nut) + durable alloy end plate
Finish: Corrosion-resistant anodizing
Purpose: Enhanced stability, improved sling attachment, custom build aesthetics
Perfect For
Custom AR builders
Competition shooters upgrading rifle ergonomics
Tactical users requiring durable sling mounting options
AR owners wanting color-matched red components
Anyone seeking a stronger, more functional castle nut & end plate assembly
Why Choose the Strike Industries TRIBUS Enhanced Castle Nut & End Plate?
Strike Industries is known for innovation, quality manufacturing, and forward-thinking firearm components—and the TRIBUS system embodies all three. With reinforced durability, ambidextrous sling versatility, and a stunning red finish, this upgrade goes far beyond Mil-Spec to deliver next-level performance and personalization.
If you demand reliability, enhanced tactical function, and custom style for your AR build, the Strike Industries TRIBUS Enhanced Castle Nut & End Plate is one of the best upgrades you can add.
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