Is there a difference between a frameless slingshot .50.70.75?

No difference. A frameless slingshot, as the name implies, is a slingshot without a fork, and there are many types of frameless slingshots, such as round skin frameless slingshots, flat skin frameless slingshots, finger ring frameless slingshots, double skin pocket frameless slingshots, and so on. There is no difference between 0.5, 0.7 and 0.75 frameless slingshots, just different names. Bowed slingshot, not only for war, but also used in daily hunting, is very good and powerful, killing and deterrent power is great a kind of weapon.