Strike Industries ARULMFEP&ACNRED QD End Plate with Hook Attachments & Anti-Rotation Castle Nut, Red Finish

The Strike Industries QD End Plate with Hook Attachments and Anti-Rotation Castle Nut in red finish is a refined upgrade to your AR's receiver extension assembly. This is the piece that sits at the rear of your buffer tube and anchors your stock—and this one adds both functional capability and corrosion resistance. If you run quick-detach sling mounts or want a cleaner, more purposeful rear end on your build, this end plate delivers the kind of attention to detail that separates a dialed-in rifle from a stock setup.

The QD (quick-detach) socket on the end plate lets you mount compatible sling attachments without tools, so you can swap or stow your sling on the fly. The hook attachments give you versatile mounting options depending on your sling hardware. The anti-rotation castle nut takes the guesswork out of assembly—it's engineered to prevent the castle nut from spinning, which means easier installation, better durability, and peace of mind that your stock won't shift under recoil.

Strike Industries' red finish provides corrosion resistance while adding a cohesive aesthetic to matching builds. Whether you're building an all-red color scheme, upgrading a workhorse carbine, or looking for a no-compromise receiver extension assembly, this end plate covers the functional bases.

Key Features

• QD socket for fast sling attachment and detachment without tools
• Hook attachment points for flexible sling system compatibility
• Anti-rotation castle nut prevents spinning and simplifies assembly
• Red finish for corrosion resistance and visual continuity on matched builds
• Direct fit for standard AR buffer tube assemblies

Specifications

Brand	Strike Industries
Model Number	ARULMFEP&ACNRED
Type	QD End Plate with Anti-Rotation Castle Nut
Finish	Red
Attachment Type	Quick-Detach Socket with Hook Attachments

Frequently Asked Questions

Will this QD end plate fit my AR carbine?

This end plate is designed as a direct fit for standard AR buffer tube assemblies. If you're running a standard mil-spec receiver extension, you're good to go.

What slings work with the QD socket and hook attachments?

The QD socket accepts compatible quick-detach mounts, and the hook attachments provide additional mounting options. Compatibility depends on your sling hardware—verify your sling or attachment system is designed for QD interfaces and hook-compatible loops.

Does the anti-rotation castle nut make installation easier?

Yes. Traditional castle nuts can spin freely during installation and adjustment, making the process frustrating. The anti-rotation design prevents this, which streamlines assembly and helps ensure the castle nut stays securely in place.

Does the red finish match other Strike Industries red components?

Strike Industries manufactures this end plate in red to support color-coordinated builds. For finish matching across multiple components, we recommend confirming the red tone with current Strike Industries product images or samples.