GBB model: TM hicap about 1 year old now...
Propellent : about 6 bottle of coleman propane, 2 of AMO green gas and 2 of duster.. probably more
Damage: wear on the slide lock is starting to show but still does the job without any problem
Upgrades: Airsoft Innovation prototype piston cup... Works like a charm. The rest is bone stock.
Vondnik, team Bad Karma, PQAC
Murphy's second rule: Nothing is impossible for the man who does not have to do it himself.