That green stuff looks like the old style green Dye sleek lube. Horrible stuff that was! It was like green jello and worked about as well lol. Actually it wasn't bad if you kept it fresh but if your gun sat for a month(even without shooting), you'd need to get rid of it and reapply.
Stock Dm12/13 Bolt wanted. Don't want to spend a fortune on a BW bolt lol. PM me.