our team has collectively something like 60 gbb's. every major manufacturer (tm,ksc,w.a.,w.e. kjw) and not 1 failure in over 2 years with only green gas use. no duster, no propane and many thousands of rounds. i have a ksc usp compact that's seen 1 river and more sand than i can count. only runs on green and never gave me any grief. soem guys in my area have bought ksc g23f and 18c and rocket valves have broken in full-auto use with green, probably 6 or so that i can recall. i did see 1 w.a. with a broken slide from green use last year. i think it was an infinity 4.3 of some sort.
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