SilencerCo AC875 Rimfire Adapter M&P 22 Compact 1/2x28 Steel Black

The SilencerCo AC875 is a precision rimfire thread adapter purpose-built for the S&W M&P 22 Compact. It converts the pistol's factory 3/8x24 thread pitch to the suppressor-standard 1/2x28, allowing the host to accept any .22 LR rimfire suppressor threaded in 1/2x28.

Machined from steel with a durable black finish, the AC875 uses an O-ring engagement system for a secure, repeatable lock-up between the adapter and the suppressor. The adapter installs directly onto the M&P 22 Compact's barrel threads with no permanent modification required, making it a straightforward drop-in solution for running the pistol suppressed.

A thread protector is included to shield the adapter's 1/2x28 threads when a suppressor is not mounted. The AC875 is compatible with any SilencerCo rimfire suppressor or any other rimfire suppressor that uses a 1/2x28 thread pitch.