Just given all the rifle bolts and bipod moving parts a good dosing of this, .. https://encrypted-tbn2.gstatic.com/...SzcLJ07TWnURkwVCkP3qco6uKpBvlMq1oYww&usqp=CAc

The give away is the spellingPTFE is way different to silicon, for different applications.
Yup!