Is your 17 a gen 4? I have the 34 gen 3 and the main differences between it and the 17 gen 3 are Barrel and slide length, connector is 4.5 lb, adjustable rear sight, extended mag and slide release. I do not have a gen 4 in my collection to compare the feel to. where I see the main difference in shooting the 34 over the standard full size models is from 40 ft and out. With the longer sight picture with the extended barrel my groups are tighter.
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