years ago at a gun shop that i use to go to there was an old man who had vfts. there so when i seen some at k mart i got one it did not last long so the next time i went back to the gun shop i asked him if i could get one off of him he gave me one it lasted about a three weeks so the next time he gave me info. on vfts. the next three i bought off of him i still have them thay are about 6 years old now
since then i have got many more +3 from pet vft.