Strike Industries Multi-Function End Plate & Castle Nut, Red

Description

The Strike Industries Multi-Function End Plate (MFEP) and Anti-Rotation Castle Nut (ACN) update the traditional endplate and castle nut arrangement for AR-style platforms. Designed to be reversible and user-friendly, the system replaces peening with set screws to allow repeatable removal and reinstallation. Built with an integrated QD socket and multiple sling-loop options, the MFEP adapts to a variety of sling attachments and mounting preferences. Compatible with mil-spec AR-15 uppers and AR-10 ArmaLite/DPMS pattern upper receivers.

Key Specifications

• Includes one Multi-Function End Plate as part of the kit contents.
• Includes one Anti-Rotation Castle Nut to secure the receiver extension without peening.
• Kit also contains set screws for anti-rotation and detent/spring retention for installation convenience.
• Includes Loctite Threadlocker Blue 242 to help secure fasteners during assembly.
• Features an anti-rotate QD socket compatible with common QD sling swivels.
• Provides three integrated sling mounting options including a traditional loop and hook-style loop.
• Reversible design allows orientation of sling loops to suit user preference.
• Eliminates the need for peening by using a set screw retention system for the castle nut.
• Constructed from 7075-T6 aluminum with an ultralight anodized finish.
• Compatible with mil-spec AR-15 and AR-10 ArmaLite/DPMS pattern upper receivers.

Clean, lightweight, and engineered for repeatable service, the Strike Industries MFEP & ACN kit brings practical flexibility to modern AR builds. Whether you prefer a QD sling, hook-style hardware, or a traditional loop, the reversible end plate and anti-rotation castle nut let you tailor sling attachment and maintenance without permanent modifications. It’s a straightforward upgrade for builders and maintainers who value modularity and durable materials.