The ballistic turret flex (BTF) can be configured separately and enables you always to stay on target at the desired distances. If it is used as an elevation turret, this can compensate for bullet drop. When used as a windage turret, it is best suited to windage adjustment or for estimating the lead distance. It is flexible, can be fitted without using any tool, and can be combined with every reticle available. A lock mechanism also prevents you from turning it inadvertently.