I purchased one the very early examples thinking I would gift it to my Daughter if I felt confident in it after a good shake-down. During my first range session I had multiple failures to feed with several magazines. I tried 3 different factory loads with the same result. I tried both ball and HP ammo, no go! I fully disassembled it, cleaned everything, inspected all the usual Fault points, then reassembled it with sparing use of a quality lube. No change, No go! I stumbled onto a used barrel for cheap ($25) and took a chance. When compared there was a notable difference in the feed ramp / chamber mouth between the two. After the swap, never had another issue. It now reliably feeds everything I've ever run. Only thing is my Daughter can't operate it. She lacks the hand strength to rack it and the grip strength to control the small grip. I now use it when I go on my daily walks in rural Idaho, just never know when an unruly racoon or cagey coyote may need an attitude adjusting. It's easy to drop into a pocket, weighs zilch, and comes to hand quickly. To be fair it is NOT my primary defense weapon when two legged threats are probable. For that I carry a high capacity 9mm, or a 10mm 1911, depending on the climate and situation.