The bag stop was designed to give shooters the ability to “load” into their shooting bag while also preventing any contact to the mag which can cause feeding issues for the rifle. This is especially helpful for 22LR actions to feed reliably. The Bag Stop Straight is was designed to move the mounting location closer to the magwell in order to maximize the balance point of your rifle. The Bag Stop Straight was designed to interface with stocks and chassis with no magwell or a straight magwell.