I think the term "sophisticated" specifically applies to their communications gear. Pretty high tech and advanced, freq. hopping gear is available in the open market which can be used by these outfits to carry out their operations in a coordinated manner against the military.
In today's context, even frequency hopping is not sophisticated. I have personally seen such sets recovered from the foreign terrorists in Kashmir. Ideal for activating IEDs and escape detection by Jammers. Today's terrorists are not the rag tag types any more. So, let it not be taken that they are a bunch of fools. They are well trained and capable of whatever they want to do and do it will telling effect. They have to be defeated.
The militants have mortars that they have been using against the Army. All this stuff, Mortars, HMGs etc. are locally manufactured in Darra etc. Yesterday there were a couple of casualties because of the mortar fire received on a camp.
Yes, Mortars, AGL, Carl Gustaf, RPG 7s, GPMGs and such like systems are easily available and can be used. Artillery has not been heard so far.