Quieter than quiet GK1?

[LayeredOgre]

Hey all, I’m looking for some mod recommendations for the Huben GK1. I’ve got mine tuned for 1 mag, ~45 fpe and the buck rail mod I’m using currently isn’t really up to the job at this power level. Width is an issue here to not block line of sight, length not an issue at all. The combo of short barrel, high power, and shroud instead of direct barrel attachment makes this tricky, so I’m all ears to any advice. Thanks!

 

[Gongetit]

Subscribers are solid designs.

 

[RAMJET66]

i have Subscriber's largest one ,i think it is 6 inch oval , my buddy shot the GK1 22 CAL , stated it sounded like a kid's cap gun. i am happy with it..