This product really corresponds to my expectations! I have an M4 AEG and of course we must put distance between the shooting and the target, not to break it, which of course is logical because a shooter within 10, 20 meters is not interesting! So for all those who are breaking the targets is that the distance was not important enough! I get to be near to 30.40 meters and there's no damage to material beads 0,20g The mechanism works properly and the mounting and very easy! I recommend it to all who love airsoft target games and have the place to have a good distance shooter! it also adjusts his sights, telescope or other accessory to aim.