I just ordered a LW 6.61" barrel with screw on compensator. Does anyone have any experience with these? How much speed is gained vs factory 4.5" barrel? How much less felt recoil is felt with the comp? Will it feel like a 9mm? Is it safe to shoot underwoods 135 out of it? Speed? Will it be accurate from a rest? How many inch groups at 25 yards and a red dot sight? Thanks Wanna kill these ads? We can help!