I took a two day training course on using the AR-15. It was a great time and a very good course. I had lunch with the owner of the training facility and an attourney who represents police officers involved in shootings. They both told me not to alter the magazine saftey on my M&P. The owner is used as an expert witness and stated that if you are forced to defend yourself with an altered gun, the opposing lawyer will have a field day. He stated I should sell the gun and buy one made the way I want if from the manufacturer. He stated you should also not use reloaded ammo in your conceal and carry weopon. He stated the lawyer will make you look like you were planning and perparing to kill someone. That you are trigger happy nut, just waiting for the opportunity to kill someone. That you altered the weapon to make it more leathal and made bullets that were designed to kill with extra powder etc.
Just something to think about!