i have a Nano, wich is an actuall Liscensed version of the g3 made by DP for Inspire.
same gun but with different milling and a stock carbonfiberbarrel
the most common issues i've encountered is inconsistent velocity and massive drop of while firing. This is most often vcaused by bad batteries since theese guns seem to drain the cheaper ones quite fast.
the stock regulator is ok, but if you adjust it to far a small black seal on the bottom of the reactor may wrangle out of place and cause the gun to build up pressure imediately and cause major inconsistency. this is easily avoided by increasing the pressure SLOWLY in 1/4 turns at the time MAX
apart from those two issues the cure for most problems is relubing. Dow33 works great in the regulator but on the bolt and boltguide i would recomend hatersauce or Dye Slick.
and since i havent posted much since "old" mcb and i sont think anyone remembers me, i'll blame bad spelling and bad grammar on the fact that im swedish
