Ozzistraightshooter Tap for common barrel muzzle thread M9x0.75 metric.
 
fine M9 Tap 
Top quality High speed steel.
 
M9x0.75 fits some models with slim barrels especially .22 caliber. Glock44 has M9x0.75 thread.
Check your thread as there are different threads which often depend on the Barrel diameter.
 
This is a top quality tool designed for professional use.