better gas effiiciency, lighter, but not significant. nice and shiny.
weak delrin bolt that's included
On initial use of the stock image bolt on my marker, i found that i needed to raise the pressure up to almost 300 psi to achieve the velocity of 300fps. Though, it's hard to conclude this to be a general statement, as each setup, even if it is exactly the same, will not achieve exact number.
With the evolve bolt installed, on stock lpr (trinity) and stock inline (cp reg), my marker after a case or so of paint, was able to reduce the amount of internal pressure down to almost 230 to 240psi.
Upon installing the scm lpr and sidewinder, i was able to achieve about 195 to 200 psi internal pressure to achieve 300fps +/- 5fps.
I recommend this product. Good bang for the buck. Dont need to buy the individual parts to upgrade the bolt kit, this bolt kit has it all on comparison of milling and holes and weight.
I give 9 because the delrin was weak and could have been better.