Umm, Airsoftgi just got some Madbull .36, .43, .3 bbs in stock. It should be of good quality.
I was about to post that. They have .20g, .25g, .30g, .36g, 40g, 43g. Normally it's very common to see off brand heavy weights that confuse people into thinking there the first descent heavy weights. On the other hand Madbull is a well known brand, and they say 5.95 +/- 0.01mm guaranteed. This is off topic, I know, but if anyone when gets these I need to know how they are....so shoot me pm with measurements, or please make a review post.
as for the .36 straights, they've discontinued so you'd be lucky to find any left. Good luck on that one!