Alright so I have a S&W M&P spec ops and SWR Trident. My problem is after 6 or 7 shots I start to get alot of blowback through the slide. If its dry then it is just un burnt powder or if its wet then it looks like I have alot of black heads. I usually shoot with glasses, but went without and got some of that bubblegum in my eye and it is bugging the **** out of me. My Question is: Is that just the nature of the beast? Or will a higher quality gun (SIG) not do this? Since there is more gap on the S&W then the sig.