helllo guys just received 3 new receivers 2 jing ji and again 1 slr
tell me which metal gearbox i should buy to fit perfectly the jing ji
and what metal gearbox to buy to fit the slr with which i could use the slr cylinder head noozle
thanks guys
i have jing ji noozle , jing ji cylinder head and i would like to use them as well as the slr
i have slr noozle , cylinder head even anslr outer barrel
Cool 
