The SilencerCo Delta Threaded Rifle Spacer 1/2×28 is a Delta threaded rifle spacer from SilencerCo, built to 1/2×28 spec. SilencerCo machines it (SilencerCo part no. AC114) to factory tolerances rather than as a generic aftermarket stand-in. It is a threaded spacer that takes up roughly a quarter inch of extra thread on barrels cut longer than the recommended 0.4 inch of exposed threads. Without it, a rimfire suppressor threaded onto an over-long barrel will not seat fully against the shoulder, leaving the can loose and prone to walking off-axis under recoil. It fits the SilencerCo Sparrow 22, Switchback 22, Warlock 22, and Spectre 22 rimfire suppressors, taking up roughly a quarter inch of extra thread so the can seats properly on barrels threaded longer than the recommended 0.4 inch. It is a practical pickup for anyone running a suppressor setup where the small parts matter as much as the can itself.

Key Specifications

• 1/2×28 thread pattern matches barrels or mounts cut to that pattern, so it fits without an extra adapter.
• .22 LR identifies the host caliber this part is sized for.
• Sparrow 22, Switchback 22, Warlock 22, Spectre 22 are the SilencerCo rimfire suppressors this spacer is compatible with.

Frequently Asked Questions

What thread pattern is this kit sized for? It is sized for 1/2×28 muzzle devices; shims cut for a different thread pitch will not index correctly.

What happens without this spacer? On a barrel threaded longer than the recommended 0.4 inch of exposed threads, a rimfire suppressor will not seat fully against the shoulder without it, leaving the can loose.

What caliber is this part built for? It is sized for .22 LR; running it on a different caliber host is not something the manufacturer specifies as safe or correct.

Buy the SilencerCo Delta Threaded Rifle Spacer 1/2×28

Order the SilencerCo Delta Threaded Rifle Spacer 1/2×28 directly from Schaefer Defense and get it moving toward your bench today. Ships fast from our Lubbock, Texas gun shop, direct to your door with no FFL required. Check out the rest of our gunsmithing tools lineup for the other small parts that keep a suppressor setup running right.