So when ever i play the J7E or Kfir C.7 in sim i sometimes get a bug similar to the counter measure bug where the gunsight disappears after some small testing i found that the gunsight is still there but is as if moved down or further back into the plane and so the HUD can’t register it, and the only way to fix it has been either land and change fuel amount (same as the counter measure bug fix) or land shoot all your rounds, let your plane rearm then see in 1st/3rd person if the gunsight is in the plane or if its infront or on the HUD and if not shoot all your ammo again and it should fix it.