Tracker they didn't all have a custom hammer and valve combo, like you said it was a test unit prototyped out on a limited number of guns.
A lot of these just needed to be good at playing paintball.
My JMJ factory came from the original owner, dusty bag edition and it had stock guts.
This one also came from original owner and 99% sure this one also had stock guts at the time of that sale before being converted to the RT valve by subsequent owners.
"I'll see it when I believe it"
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