lol... stock fps might be from 350 to 400 fps..

my rk02 has a 380fps stock fps..

i dont use a stock gun... so stock fps is not an issue with me..

dont have scope mount T-T

thats because it will hinder the underfolding stock, you cant fold it when a sidemount is installed...

Can you open the gearbox i want to see indise Plzz

based from pictures ive seen from RA forums.. the internals are the same with earlier models of Kalash series...