Strike AR Castle Nut & Extended End Plate Steel Red Hardcoat Anodized

The Strike AR Castle Nut and Extended End Plate combo is a direct-fit upgrade for the AR-15 lower receiver's buffer tube area. Machined from steel and finished in a durable Red Hardcoat Anodized coating, this matched set replaces the standard castle nut and end plate with a lengthened nut that supports more of the receiver extension's threaded area while cleaning up the overall look of the build.

The extended end plate is designed with integrated ambidextrous Quick Detach (QD) sling swivel mounts and anti-rotation tabs that keep the plate indexed correctly during installation and prevent shifting under recoil. The matched steel castle nut incorporates enhanced staking points for a more secure stake on the receiver extension, helping the buffer tube stay locked in place under hard use.

Built as a drop-in replacement for standard mil-spec components, this Strike castle nut and end plate combo installs with the same tools and procedure as the factory parts, making it a straightforward upgrade for builders looking to add QD sling capability, improve staking security, and achieve a clean, matched look at the rear of their AR lower.