Received my free sample of weapon shield yesterday. It is a combination lubricant, cleaner, and preservative. This stuff is awesome! I PUT SOME ON A PATCH AND RAN IT DOWN THE BARREL OF MY m&p 9 AFTER CLEANING WITH ANOTHER PRODUCT. i WAS AMAZED WHAT THE OTHER PRODUCT LEFT IN MY BARREL. i lUBRICATED THE INTERNAL PARTS AND IT WAS MUCH SMOOTHER. iF YOU WANT YOUR FREE SAMPLE EMAIL YOUR NAME AND ADDRESS TO [email protected]. YOU WILL BE HAPPY YOU DID.