Which they could've gotten from china.
Ok,let's look at a blowdown of all AQ weapons used till date or is likely to be used:-
1.The AK-47 & Ak-56 guns-both started out as standard Soviet issues.Is the preferred weapon of terrorists & rebel groups the world over.Is built both under license & illegally in the various states of the former Soviet Union(& that includes not only Russia),China,India,Pakistan & pretty much anyone who can get the materials.These are sold both on the legal market & on the black market & anyone can purchase it without bothering whether it's built officially.
2.RPGs- started out as a Soviet weapon,but the Chinese have entered the market in a big way.Chinese variants are big on the black arms market & are also used by the Pakistani army,which is close to the Taliban.Besides,there are numerous RPGs which are leftovers of previous conflicts,including the 80s Afghan war.
3.MANPADs-Al Qaeda or it's affiliates have used both the ex-Soviet SA-7 Strela & the American Stinger.The Stinger was given to the Mujahideen in the 80s by the CIA to take on Soviet Mi-24 Hinds,only problem is that they forgot to take it back.Shoulder fired SAMs are also built by a number of nations for the black market,including China & Pakistan.They also can be acquired from former conflict zones.
4.Fighter aircraft/nukes-AQ are yet to use fighters,but when they do,it will jets used by countries where their ideology is strongest,including possibly Pakistan,Saudi Arabia,Egypt.All 3 of those nations use a lot of American aircraft including the F-15D & F-15S(Saudi Arabia) & F-16(Pakistan & Egypt).In 2003,Israel said that they expected a jihadi Saudi pilot to use his F-15S as a suicide weapon.Material for dirty nukes can be & has been found in the Former Soviet republics,but the chance for a real nuke is most visible from Pakistan.They have proliferated to North Korea,Iran,Libya & possibly Saudi Arabia.