TX22 316 Stainless Steel Inserts. 
These replace your OEM inserts. Add weight for those who run suppressed and are built to outlast OEM inserts while running a FRT. 
Kit includes a 304 Stainless Steel FRT
These each have been fit and function tested in a TX22 Compact but like most FRTs they may still need some polishing in certain areas to fit or function in your firearm. They will come sanded and polished on the friction points.