mines worth it dude,
you'll never have to replace cupseals, or bumpers. and believe me i played today, and i shot an alias and empire, and mines faster. I chronoed 271, 271, 271. Nice no change. also, its got less use then most guns. and the GZ will need alot of upgrades.
Also its got LCD, which is a nice add on.
Dual regs, with the expansion, chamber...to get lower presure. so that you could save on gas and get better accuracy.
Two guages, one for the HPR, and the other for the LPR, for better setting of your regs.
adjustable ram cam with an extra o-ring, so that it will never side off.
the trigger job alone on this gun has over $100 in it.
and pretty soon i'm adding a alias trigger guard.
all i got to say is that you'll be sorry, if you pass this up.