GRIFFIN CM-HDDTRM 1/2X28 CHECKMATE-HD 22 DT R MNT

Description

The GRIFFIN ARMAMENT Griffin Cm-hddtrm Checkmate-hd 22 is a sound suppressor.

This is an NFA item, so the process differs from an ordinary firearm purchase. It transfers on a Form 4473 with a NICS background check, the same as any other firearm. State law may still restrict or prohibit it where you live. Since 9 October 2026 the ATF no longer enforces NFA registration or approval for suppressors and short-barreled firearms, and the transfer tax has been $0 since 1 January 2026. Your own state law did not change, so check it before you order. You cannot take possession until ATF approves the transfer – the item stays with us until then. It can be registered to you as an individual or to a trust.

The suppressor threads 1/2X28. The host barrel has to be cut to exactly that thread – 1/2×28 is the usual thread on .22 and 5.56 barrels, and a mismatch will either not start or will cross-thread. If your barrel is a different pitch you need an adapter or a different mount, not force.

Suppressors reduce the sound of a shot; they do not silence it. How much quieter any given setup is depends on the host firearm, the barrel length and the ammunition – subsonic ammunition is much quieter than supersonic through the same can, because the crack of a bullet passing the sound barrier happens downrange and cannot be suppressed at the muzzle.