I tried one and did not like it a whole lot. It did seem to reduce that sharp jolt when the slide stops against the locking block but it did not feel quite right to me. I shoot USPSA alot with my XD-40 Tactical and so I thought it might help keep my sights on target better but it did not really help that to much.
That said it did make a difference in felt recoil just not one I really liked. I don't mind the recoil of the 40 so reducing felt recoil was not a big factor to me I want less muzzle flip. If you are sensitive to recoil you might find you like this gadget. If you would like I would sell you mine it has about 300 rounds on it in like new condition and I believe I still have all the original packaging. If interested PM me.
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