To answer your question YES lube and clean the SNOT out of your BCG as often as you like. Grease or lube your trigger pins and rotating parts every now and then. I am also a fan of cleaning the area just forward of the feed ramps where the locking lugs go when the bolt goes home. They make special tools and swabs for it but a cotton ball or patch on a 90* “pick tool” works great too.
This is where folks get sideways with me.
LEAVE YOUR BORE ALONE. If you must drag something through the bore make it a DRY bore snake. Do NOT scrub the copper out of it after every range trip with Hoppes #9 or other just leave it be. You just spent XYZ number of rounds getting it sighted in and shooting well don’t screw up all that ammo and work by cleaning the bore. If you clean it you will go straight back to zero and need to put another 50+ rounds through it to get it accurate again. If you leave it alone the very first shot out of your tube will go where you aim it. Keep shooting it dirty until the accuracy goes away (about 750 - 1K rounds). THEN go clean the snot out of it and take it back to the range and dump 50 rounds through it and leave it for the next range trip. I’ve done the tests I’ve checked with other shooters, this is how you make the first shot just as accurate as the last shot you took.
Cheers,
Craig6