The AR-15 receiver end plate/buffer tube castle nut is used to connect the buffer tube to the receiver and prevent any type of nipples from slipping off. This durable receiver end plate/buffer tube castle nut is machined from 7075 T6 aluminum for a strong lightweight platform. The machined receiver end plate/castle nut helps prevent any unwanted nipples from forming and is a crucial part of overall receiver installation. This receiver end plate/buffer tube castle nut should be installed at each end of the buffer tube instead of each individual end of the buffer tube. Please refer to your manual for proper bolt removal/adjustment.
