I took my new P30 to the range today. I cleaned her before I shot. I was using Blazer Brass. 115 FMJ. 150 rounds. I had allot of FTE. Plus the slide not opening after the last round. I put thru 250 rounds of BB thru my 92F before I got my P30. The 92F had no problems. I shot 34 rounds oh WWB 115 FMJ. Same thing. I had 10 rounds of 124 Eagle FMJ. Same problems. I had two HP 115 guessing WWB HP. I put 1 round in each mag. After firing. The slide did not go back. This being the first Auto pistol I own that has done this. When I got home I called H&K. I spoke with Link about this. He asked when I was going to the Range again. He said shoot some more. IF it still does the same thing. I should call him back. HK wants to look at my P30. Anyone else have this happen with their new P39. This happens with both mags. Also with 2 or 3 rounds left FTE.