Overall the kit delivers a much lighter and smoother trigger pull. Install was not an issue and while I was in there proper polishing and lubrication was performed. At the range the 442 was easily more shootable with the exception of one problem. The trigger on my pistol, with the new rebound spring, was quite sluggish. This was not observed with the stock spring. So as it stands for now the TK rebound spring has been removed. I'd like to investigate further why this is happening and make this whole kit work as it should.