Presma Aluminum Castle Nut for .223/5.56/.308 Buffer Tube Receiver End Plates Black

The AR-15 receiver end plate/buffer tube castle nut is used to connect the buffer tube to the receiver and prevent 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 castle nut helps prevent nipples from forming and is a crucial part of overall receiver installation. It should be installed at each end of the buffer tube rather than at each individual end of the buffer tube. Please refer to your manual for proper bolt removal or adjustment. Specifications: Manufacturer Presma, Condition New, Fabric/Material 7075-T6 Aluminum, Quantity 1. Package Contents: Presma AR Buffer Tube Receiver End Plate Castle Nut.