They talk a good game however the spring- shim kit I ordered for my sp-101- .22lr revolver resulted in about 25% misfires. They provided less than half the shims needed to shim the trigger. Their attitude was “well, that happens” they suggested I buy thicker trigger shims elsewhere. When I inquired about the 100%satisfaction guarantee I found that since I had installed the kit that I would only get a store credit minus a 25% restocking fee. And I would have to remove the installed parts and send back for their approval. Not happy. Will not recommend and will shop elsewhere in the future. They couldn’t even tell me with confidence what weight the hammer spring in the kit was. Got about 3 answers. Factory spring works fine.