Strike Industries Ultralight Multi-Function QD End Plate & Anti-Rotation Castle Nut Red - AR-15/M4

The Strike Industries Ultralight Multi-Function End Plate paired with the matching Anti-Rotation Castle Nut is a drop-in upgrade for AR-15 and M4 rifles using mil-spec buffer tubes. Finished in red, this combo replaces the standard end plate and castle nut with a purpose-built set that adds sling mounting options and eliminates the need to peen or stake the castle nut during installation.

The end plate features a built-in anti-rotation quick-detach sling socket that is positioned rearward of the standard location to clear the webbing of the primary hand during weapon manipulation. Integrated sling loops are built into the design, and the plate is reversible so the attachment points can be oriented to either side as preferred.

The matching castle nut is a slim-line design with a ridged exterior for easy installation. A threaded pin insert secures the assembly in place, doing away with the traditional stake or peen step and making future removal and service straightforward. Together, the end plate and castle nut deliver a secure, repeatable fit with multiple sling attachment points and a clean, upgrade-friendly installation.