Strike Industries Multi-Function End Plate & Castle Nut — Black

The Strike Industries Multi-Function End Plate and Anti-Rotation Castle Nut modernize the traditional castle nut and endplate system for AR-15 style builds. Designed to allow repeatable use without peening, the assembly secures the receiver extension using a set screw and provides multiple sling attachment options. Built from steel and finished in black, it integrates anti-rotation features such as a QD socket or various sling loops.

Key Specifications

• The finish is Black.
• The product type is Castle Nut/End Plate.
• The material is Steel.
• The component fits AR-15 platforms.
• The design includes an anti-rotation QD socket or sling loops for secure attachment options.
• The assembly uses a set screw to secure the castle nut instead of peening for rebuild-friendly reuse.
• The unit is reversible to suit multiple mounting orientations.
• It offers three integral sling mounting options, including a traditional sling loop and a loop for hook-style attachments.
• The color is listed as Black.
• The listed weight is 1.5 oz.

Compact and practical, this multi-function end plate and castle nut simplifies sling integration and maintenance for AR-15 builds while avoiding permanent peening. Its steel construction and reversible design provide durable, flexible attachment points for a range of sling hardware and QD mounts. For builders who prefer repeatable setups and tidy receiver-extension interfaces, this Strike Industries assembly offers a straightforward, build-friendly solution.