Tactical Rifleman got some drills for those who use LPVOs on their rifles to follow... "We have more and more students showing up to carbine courses with LPVOs mounted on their blasters. That's awesome, so long as it matches YOUR situation and YOUR mission at home; I want you to train with the equipment you plan to fight with. So, show up to our courses with YOUR setup, not just what you think we want you to bring for a course.