If any 29feb proved the more the betterThis has been known since the wing reinforcements in block 2, it’s just that PAF never uses the configuration, this is the first photo of it (it is a JF, can tell by the wings).
It may be because of TWR/drag reasons, it can surely carry and fly with them just fine, but on a light aircraft with a single engine it can reduce the aircraft’s performance to a point where they are not comfortable with it.
And the JF-17 really doesn’t need to carry more than 2 BVRs in most cases. I suppose if really needed such a configuration can be used and we may see it more often once JF hopefully gets a new engine.
PAF shoot several BVRs (if the other side of story is heard)