Dead Air Armament Thread Spacer 1/2 x 28 RH - Black Finish (Model DA423)

A Dead Air Armament Thread Spacer in 1/2 x 28 right-hand configuration is a precision adapter that solves a common suppressor setup challenge: when your barrel threads extend beyond the standard length, you need the right spacing to ensure your rimfire suppressor functions as designed. This black-finished spacer threads onto your barrel and holds position even when your suppressor isn't mounted, so you're not fumbling with loose parts at the range or in the field.

Rimfire suppressors are engineered with a specific blast chamber geometry to manage the unique pressures and velocities of .22 LR and other rimfire loads. When barrel threads run long, that chamber spacing gets thrown off, which can lead to uneven baffle erosion and suboptimal performance. The Thread Spacer restores the correct gap, protecting your suppressor internals and keeping your shot signature and handling as consistent as the design intended.

The internal threading means this spacer stays put on your barrel—no risk of it unscrewing or getting lost between trips. It's a straightforward, durable piece of kit that quietly solves a real problem for rimfire shooters running suppressors on longer-threaded barrels.

Key Features

• 1/2 x 28 right-hand thread pitch for standard rimfire barrel compatibility
• Internal threads grip your barrel, staying affixed when suppressor is removed
• Restores proper blast chamber spacing for optimal rimfire suppressor performance
• Black finish
• Reduces baffle erosion by maintaining correct suppressor geometry

Specifications

Frequently Asked Questions

What barrel threads does this spacer fit?

The Dead Air Thread Spacer is machined for 1/2 x 28 right-hand threads, the standard rimfire suppressor thread pitch.

Will this spacer stay on my barrel when I remove my suppressor?

Yes. The spacer has internal threads that grip your barrel, so it remains affixed even when your suppressor is detached.

Why would I need a thread spacer for my rimfire suppressor?

If your barrel's threaded section is longer than the standard 0.4 inches, a thread spacer ensures your suppressor's blast chamber sits at the correct distance from the muzzle. This maintains optimal performance and reduces premature baffle erosion.