i started doing major practice for my ccw today (because it finally came in!) but im not going to actually carry till i become quite proficent but anyways i was introduced to grip bite? aka the thumb safety making my hand bleed on draw shots. The guy who owns the range reccomnd i get a full beavertail thumb safety now since im no gunsmith i cant do it myself but my question is about how much should it cost for me to have it done? thanks for the help!