SilencerCo Delta Adapter | 1/2×28 O-Ring Adapter | .22 LR

The SilencerCo Delta Adapter is a compact o-ring engagement adapter designed to make .22 suppressor attachment simple and repeatable. It shortens the exposed 1/2×28 muzzle threads and uses an o-ring interface to protect threads and reduce the likelihood of the can working loose during use. It is built for use with a range of SilencerCo .22-compatible silencers and intended for range and field applications.

Common applications include precision target shooting and small-game hunting using .22 LR platforms; the adapter is not a firearm itself and is intended to facilitate safe, reliable suppressor attachment.

Product Specifications

• The product name is Delta Adapter 1/2×28 to 1/2×28 O-Ring Engagement Adapter.
• The manufacturer is listed as Silencer Co.
• The thread pattern is 1/2×28.
• The NFA thread pattern is 1/2×28.
• The listed caliber compatibility is .22 LR.
• The color is specified as Black.
• The weight is specified as 0.10 lbs.
• The adapter shortens .6″ 1/2×28 threads to .4″ as described in manufacturer notes, producing a shortened exposed thread length.
• The adapter uses o-ring engagement to protect muzzle threads and help keep the suppressor secure.
• An included feature is a thread protector.
• The product type is listed as Accessory-Silencer Accessories.
• The model designation is Delta.
• The series is listed as Adapter.
• This adapter is compatible with Switchback 22, Sparrow 22, Spectre 22, Warlock 22, and Osprey Micro 22 as noted by the manufacturer; compatibility may vary by silencer revision, firearm, and barrel configuration, so verify fit for your setup.
• The UPC is 817272010039.

The Delta Adapter is a straightforward way to prepare a .22 platform for swift suppressor attachment while protecting muzzle threads. Its compact form and o-ring engagement make it well suited to range use and field work where easy installation and repeatable alignment are priorities. For users running .22 LR cans in the listed SilencerCo product family, this adapter provides a practical interface option without adding unnecessary bulk.