Armaspec ARM6521-BLK Self-Retention Castle Nut Black

Description

Product Overview

The Armaspec ARM6521-BLK Self-Retention Castle Nut is an aluminum AR-pattern buffer tube castle nut designed to help prevent loosening. It uses a self-retention design to improve consistency and reduce the chance of the receiver extension assembly drifting out of alignment during use.

Key Features

• Self-retention design helps resist loosening under recoil and handling
• Aluminum construction for a durable, lightweight build
• Black finish to match common AR-15/M4 build aesthetics
• Designed specifically for AR-pattern buffer tube / receiver extension assemblies

Upgrade your buffer tube setup with a self-retention castle nut from Armaspec for a cleaner, more secure fit.