Spacer 3in ID

The Spacer 3in ID by EIBACH is a precision engineering component built to maintain accurate spacing and alignment in tactical systems and high-performance applications. This spacer addresses a critical need in firearms assembly, suspension tuning, and modular platform builds where tolerance control directly impacts reliability and function. Whether you're managing barrel extensions, rail systems, or component stacking in custom weapon builds, proper spacing prevents binding, misalignment, and premature wear that compromises system integrity.

The 3-inch inner diameter design accommodates standard threaded shafts and cylindrical component interfaces common in AR platform builds, suppressors housings, and adapter stacks. EIBACH's precision manufacturing ensures consistent wall thickness and concentricity, delivering the dimensional accuracy demanded in tactical applications where sloppy tolerances lead to zero shift, mounting instability, or catastrophic failure under recoil. The compact 0.1-pound weight profile makes it ideal for builds where every ounce matters, while the durable construction withstands repeated assembly cycles and field disassembly without deformation or thread stripping.

Law enforcement armorers, military small arms technicians, and competitive shooters benefit most from spacers that maintain critical clearances during receiver assembly, upper-to-lower interface setup, or suppressor mounting. Installation is straightforward: position the spacer on the threaded shaft or component stack, verify alignment, and torque your fasteners to specification—no modifications required. This spacer pairs seamlessly with standard AR-pattern hardware, compensators, muzzle devices, and barrel extension systems; verify your specific application's inner diameter requirement before ordering to ensure compatibility with your platform.