White Label Armory Mil-Spec AR-15 End Plate Kit with Castle Nut

Description

Every AR-15 lower build eventually comes down to the small parts that hold the whole thing together, and the end plate and castle nut are right at the top of that list. The White Label Armory Mil-Spec End Plate Kit gives you both pieces cut to standard dimensions, so your buffer tube locks to the lower receiver cleanly and stays put. It's a black-finished set built from aluminum and steel, made to fit standard AR-15 receivers without any fuss.

What the White Label Armory End Plate Kit Does on Your Build

The end plate sits between the lower receiver and the castle nut. Beyond just spacing things out, it captures the rear takedown pin detent and spring and keeps them from launching across your bench. Once you slide it into position, the castle nut threads on behind it and gets torqued down to lock the whole receiver extension in place. Because this kit is held to Mil-Spec dimensions, it plays nice with standard buffer tubes and standard receivers, which is exactly what you want when you're mixing parts from different makers.

Getting the WLA-BUF-7006-01 Kit Installed Right

You'll want an armorer's wrench to seat the castle nut properly. Thread the buffer tube in, drop in your takedown detent and spring, slide the end plate on to capture them, then hand-tighten the castle nut before torquing it to spec, generally in the 38 to 42 ft-lb range. Notched castle nuts like this one are also set up for staking, where you deform a bit of the end plate metal into one of the nut's notches to keep it from ever backing off. Staking is optional for most casual use, but it's a nice extra step for a hard-use or duty-style rifle.

Whether you're finishing a fresh lower or swapping out a worn set of parts, this is a straightforward, dependable kit that does its job and gets out of the way. Grab a spare or two while you're at it, since these tend to disappear into project bins.