I recently added a suppressor to my Smith & Wesson M&P10. It gets dirty pretty fast. The only modifications are a vented charging handle and a JP Rifles Buffer. I can't get through half a magazine before it gets so dirty that it won't fully eject spent shells. It is easy to clear the shell and shoot a few more rounds before it does it again. Its a real pain in the but. I am looking for suggestions on how to reduce how quickly it gets dirty so I can get more shots of it before cleaning.