I don't have any first-hand with KelTec, (but I did mean KelTec above where I referenced the Grendel......showing my age).
One of my USMC brothers is a LEO in WV. He was telling me he carries a Glock 21 for a primary, and a KelTec P11 for a backup. He likes the P11.
I understand about the age thing ,I am over 21 myself !
I never had any issues with the ones I had but like so many guns I have owned throughout the years they were either traded off or sold.
