Why are all the airsoft G3 rifles out of stock?

I mean the long full stock full barrel ones. I am saying the echo 1 dsr the jg g3 the ca33e and the tokyo marui g3, their all out of stock, at every airsoft store i look at, there all gone, and have been for a very long time. I WAS going to buy one but then i realized their out of stock everywhere. I know the tokyo marui is in stock at redwolf but ive heard it takes FOREVER for them to ship things. If you have any suggestions about any guns similar to the g3. FOR THE RECORD I DO NOT LIKE THE LOOK OF THE G3 SAS SO DONT SUGEST THAT!!!