What is this Brown Stuff on my PSA Carbine Upper

To confirm, it should be anti seize.
What should I use to clean it?
When I clean it what should I be looking for?
Is the rifle safe to fire?

Anything else?

Thanks for reading my post.


Yes, and no worries. Just wipe it off and go shoot your gun.

looks to me to be copper based anti-seize. which is easy to wipe off and doesnt harm anything.

Thank you sir!

Will do! Thanks!

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Use a paper towel and don’t get it on your clothes. It’s hell to get out of clothes.

UPDATE: It was grease, cleaned and all is well, thank you all for replying!

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