I should have a HK91K back from being converted to use with my registered pack in a couple weeks and am wondering if anyone is running a suppressor on theirs. I know that's not the point with a HK51 but the British SAS IIRC used a suppressor on the G3K at one point. I have a Silencerco Omega but its only rated down to 16". I was thinking a Saker 7.62 or maybe the new Surefire SOCOM2 300SPS. Are there any other suggestions?