Strike Industries AR Enhanced Castle Nut & Extended End Plate
Not Yet Rated | Write the First Review SKU: 222-STR-SI-AR-ECNEEP-BK
UPC: 709000000000
MFG#: SI-AR-ECNEEP-BK

Strike Industries AR Enhanced Castle Nut & Extended End Plate

Tactical Utility Meets Modern Aesthetics

Redefine the rear end of your AR build with the Strike Industries AR Enhanced Castle Nut & Extended End Plate—a purpose-built upgrade designed for shooters who demand function, form, and flawless QD sling integration. This bundle includes both the Enhanced Castle Nut and Extended End Plate, offering precision-machined parts, advanced sling versatility, and ease of installation without compromising strength or safety.

More than just an aesthetic enhancement, this combo provides centralized QD sling mounting for both right- and left-handed shooters, reduces unnecessary bulk, and simplifies takedown pin installation via a set screw design. Perfect for mission-ready builds or custom tactical setups, it’s an intelligent, forward-thinking upgrade to standard mil-spec hardware.

🔧 What’s Included

• 1x Strike Industries Enhanced Castle Nut
• 1x Strike Industries Extended End Plate
• 1x Warning Card

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⚙️ Key Features & Benefits

• Centrally Positioned QD Socket – Allows ambidextrous sling use, centered for optimal weapon control
• Aesthetic Upgrade – Precision machining and finish deliver clean, modern styling
• Simplified Build Process – Integrated set screw design eases installation of takedown pin and detent
• Enhanced Durability – Stronger than mil-spec components; built for hard use
• Drop-In Installation – Compatible with most AR15 receiver extensions (mil-spec)
• QD Clearance Consideration – Eliminates fully collapsed stock position to preserve QD function
• USA Engineered – Designed by Strike Industries for shooters, by shooters

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⚠️ Important Installation Notes

• Required Tool: Use a spanner wrench (recommended: OTC 4791) for proper installation. Avoid standard AR wrenches that may damage the castle nut.
• Torque Spec: Do not exceed 35 ft/lbs (47.45 Nm) when tightening the castle nut.
• Tolerances Warning: Some receiver extensions may not thread completely due to varying dimensions.

🔒 Safety Reminders

• Always verify the QD socket is functioning properly before each use
• Keep the firearm on SAFE when not in use
• Follow all standard firearm safety rules

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🎯 Perfect For:

• Custom AR15 & AR10 builds
• Tactical rifle builders looking for QD sling optimization
• Right- or left-handed shooters needing centralized sling point control
• Users upgrading from traditional mil-spec end plates and castle nuts

📦 Specifications

🔩 Build Smarter. Lock in Function. Stay Mission-Ready.

The Strike Industries AR Enhanced Castle Nut & Extended End Plate isn’t just an upgrade—it’s a complete rethinking of how your AR rear end should function. With smart QD integration, clean aesthetics, and simplified installation, it’s the go-to choice for builders who care about the details that make a difference.

Order yours today and give your rifle the tactical edge it deserves.