Trailblazer Firearms known for their Lifecard foldable rimfire handgun has recently announced via pre-order their new 22lr threaded barrel.
The new Lifecard threaded barrel allows you to host silencers or any number of muzzle devices.
+ .22LR Threaded Barrel W/ 1/2×28 Adapter
+ Easily Swap Between Barrels
+ Storage Tin & Hex Key Included