Question on brown stuff coming from around the gas block on my SA M7. Could it be rust??
I have an SA M7 and noticed some brown / slightly reddish looking stuff coming out onto the barrel from under the gas block. I let some oil soak into the area...and after heating up the barrel with a few rounds down range the stuff came out in greater quantities. Could the rifle be rusting under the gas block or what?
Anyone have a clue?
Or my Bulgy Makarov had similar stuff on much of it as grease for shipping.