wow! that was really lot of metal parts, very cool! thanks for the info Matrix (sorry can't give good rep)
woo.. more preferred J-Armory M1911A1 Springfield now, rather than KSC M1911A1
hope J-Armory had long/more durability if using R22 Propane Gas
hehe.. standart japanese GBB manufacture
did anyone have guide to open the stock cylinder [original] vsr-10 G-Spec?
and what about the cylinder head? is it OK to use the stock [original] cylinder head when the original cylinder already opened?
don't have money to buy PSS10 teflon cylinder