So my buddy didnt believe me that if I covered my AR in sand that it would still fire. $20 later and I was right he was wrong. But now i have a problem. How do I get all this sand out! All the sand is stuck to the oil. I soaked it in the bathtub with some dawn dish soap, completely field stripped. Charging it feel less gritty now but id like to get all the sand out... Suggestions?