Loaned my A2 to someone one time and he was hitting the business end of the light against a piece of wood to point out something to me. I did not say anything cause he was doing me a favor. Did not do any damage to the Surefire but it made me cringe. I later dropped it on the driveway and and put and ding on it, made me sick for a few min. Now i think that i like it better than before, I am not scared to use it now. After all that is why i got a Surefire right?? Any cheap light will work if it is never dropped or abused.