It’s a good idea to oil your bolt carrier group (BCG) regularly – especially if you live in a humid climate. Oiling the BCG will help prevent rust and corrosion, and will keep it operating smoothly.
To oil the BCG, first, remove it from the gun. Then, using a clean rag or paper towel, wipe off any existing dirt or debris. Next, apply a thin layer of oil to all surfaces of the BCG, including the bolt itself, the carrier, and any moving parts. Be sure to get into all of the nooks and crannies! Once you’ve applied the oil, use another clean rag to wipe off any excess.
Now reassemble your gun and you’re good to go!
Johnny Answered question July 6, 2022