Well there is several ways to go about this, but first I'll explain the difference between all this postban stuff. The "ban" was an FPS limit set in Japan, now I don't actually know what the actual limit it is, but its some where around 300FPS. Tanaka rifles (PREBANS) can shoot anywhere from 0fps-500+fps. They do this with the Power Control System(or pcs for short). Because of Japan's FPS limits, they removed this PCS system and added a restrictor nozle. Now the new (POSTBAN) Tanaka's can only shoot 300fps with this restrictor nozzle. HOWEVER, many sites offer the "export" version, this is the Tanaka with NO PCS, but the nozzle ristrictor is removed, and the gun will shoot about 475fps. BUT there is also another way you can go which is the way I went, order from Hot Spot Airsoft, for 2 reasons.
1. they drill out this "restrictor", and actually makes the nozzle bigger than the export version. Mine, that I ordered from HSA, shoots over 700 fps on GG, but your suppose to use duster gas/(available at any local staples or computer stores) or freon(HFC134a)
2. If you order from HSA they are in New York, not Hong Kong. so if u have a problem with it, you can send it to them and they will usually get it within 2 days, not 2 weeks, and they call u the day they get it.
Me, being a Newbie with gas, never lubed the mag spring, and if u didn't know propane dries everything, so my gun would literally stop firing. So it only took 2 weeks to ship it there, have them look at it, and send it back, in the time it would take to arrive in Hong kong.
SO, to answer your question, NO it is not pointless now, you just have to know where to look before you buy, if you want anymore advice just PM me about it, I have one, and I love it, they are a class about everyone else when it comes to quality, look, feel, performance, and reliability.
Make sure u use .40's+, I'd recommend .43 from Madbull(order from trinity airsoft), anything lighter will just curve violently
also I'm not sure about this, but u can also order the G&G power bolt, which I THINK has a control nozzle
also I think this is the longest post I've ever made, haha