Gemtech 22 QD Suppressor Adapter for Rimfire Silencers 0426AD2D MO. The four lug muzzle device is threaded -28 to mount on all standard rimfire threaded barrels for maximum compatibility. The QDA mount is threaded -28 for use in all rimfire silencers in 22LR and 22MAG. The 22 QDA will allow you to switch firearms quickly and still maintain complete control. Features of Gemtech 22 QD Suppressor Adapter for Rimfire Silencers: Universal adapter for all rimfire silencers Quick attachment and detachment Four lug muzzle device for maximum compatibility Threaded -28 mount for standard rimfire threaded barrels Package Contents: Gemtech 22 QD Suppressor Adapter for Rimfire Silencers The GEMTECH 22 QDA is a universal adapter for all rimfire silencers that allow attachment and detachment quickly and efficiently. The four lug muzzle device is threaded -28 to mount on all standard rimfire threaded barrels for maximum compatibility. The QDA mount is threaded -28 for use in all rimfire silencers in 22LR and 22MAG. The 22 QDA will allow you to switch firearms quickly and still maintain complete control. MO12201