Got my Shield chambered in .40 for Scottsdale Gun Club in Oct. 2012, finally got around to shooting it 2 weekends ago. On the 3rd pull of the trigger the extended mag dropped. I assumed I hit the release, I did the tap, rack, bang. It fired the 4th round and drops again..this time I really "TAP" the hell out of it, rack and bang..yep drops again. Now I clear the weapon, take the mag out look at the round look inside the gun all looks ok. I take the 6 rd mag and load it, fire 3 rds and it drops. Again stop, and clear the weapon. Now I am sure it MUST be my grip on this smaller gun. So adjust grip and thumbs so there is no way I am getting anywhere near the release, and then begin firing the 7 rnd, on the 2nd pull mag drops and next rnd fails to load.
Now I suspect the ammo, I was shooting some older stuff I had. So I out the gun away, went home. I cleaned it, oiled as directed and bought some premium ammo, Hornaday Crit. Defense, Win Elite, and Federal Hydro's.
Same problem, on the 7 rd mag it dropped every other shot. The 6 rd I never got more than 4 shots, sometimes only 2 and I am sure I am not touching the release with my thumbs or palms.
My serial # starts with HAD11 and was factory test fired on 9-18-2012
Time to call Customer Service

I don't trust this weapon to protect my life.