Just returned from test firing my new/used (2005) G39. As with most Glocks, it propelled all four types of ammo (WWB 230; Lawman 185; Ranger 230; and Magtech 165) downrange with efficiency and zeal. And recoiled much less than I anticipated, even without the magazine extension. Heard a rumor that Blue Label Glocks (of which mine is) are cherry-picked LEO pistols. Any truth to this? Anyway - if anyone out there is feeling a bit of caution on buying a G39 - worry naught. A fine Glock in a great caliber. Cheers Wanna kill these ads? We can help!