Gamo bwbc mod?

I agree with mentolio, I thought the same at first then asked the gang here and did some research and the only thing I found was just check the piston seal. It might not change anything it just depends if the stock seal is bad. I would crony it first to see what your getting if you can't afford one there an app called crono connect Its free and I use it.
I live just south of JBLM if you have any questions just haller.
 
Alrighty then, I had just seen a lot of people opening the transfer ports up on the 1322s and qb-79s and other crosmen platforms I figured maybe the science is interchangeable glad I asked befor drilling away at my first break barrel. I'll just stick with the plan to get a grt-4g from Charlie da tuna (36 bones)
and a lower power spring http://vortekproducts.com/ourstore/PG2-GAMO-WHISPER?search=Game 
and that's so it won't chew up the inexpensive scopes I slap on it
also have any of you put a bipod on your springers befor?