SilencerCo Delta .250" Thread Spacer 1/2"-28 Steel Matte Finish

The SilencerCo Delta .250" Thread Spacer in 1/2"-28 is a precision mounting accessory designed to solve a common threading mismatch on rimfire rifles. If your .22 rimfire barrel has muzzle threads that extend longer than they should—a surprisingly frequent manufacturer oversight—this steel spacer bridges the gap and ensures your rimfire suppressor sits where it belongs. Both rimfire and centerfire sound suppressors use the same 1/2"-28 thread pitch, but centerfire rifle barrels have a longer threaded section by design. When a rimfire gets centerfire-length threads, you face a dilemma: screw the suppressor on tight and risk over-torquing it against the barrel, or leave it loose and compromise suppressor positioning and performance. The Delta spacer eliminates that compromise.

Machined from steel with a matte finish, this spacer maintains precise concentricity while effectively shortening the threaded engagement area. It provides a solid bearing surface for your suppressor to shoulder against, ensuring proper alignment and consistent operation. Beyond function, it cleans up the visual appearance of your rifle by concealing excess threads that would otherwise be visible.

Whether you're running a dedicated rimfire platform or swapping suppressors between rifles, the SilencerCo Delta spacer is a simple, effective solution to thread-length problems. Keep one in your kit for those situations where factory specs don't quite line up.

Key Features

• Corrects over-long rimfire muzzle threads on 1/2"-28 barrels
• Maintains concentricity for optimal suppressor positioning
• Provides solid shoulder support for suppressor engagement
• Machined steel construction with matte finish
• Hides excess threads for cleaner rifle appearance

Specifications

Frequently Asked Questions

Will this spacer work with my rimfire suppressor?

Yes, provided your rimfire suppressor is threaded 1/2"-28. Both rimfire and centerfire suppressors share this thread pitch, so the Delta spacer is compatible with any 1/2"-28 rimfire sound suppressor.

How do I know if I need a thread spacer?

If your .22 rimfire barrel has muzzle threads that appear longer than typical or if your suppressor doesn't seat flush against the barrel shoulder, you likely have over-length threads. The spacer bridges that gap and ensures proper suppressor positioning.

What's included?

You receive the SilencerCo Delta .250" Thread Spacer machined and finished, ready to install on your 1/2"-28 threaded rimfire barrel.