We bought a new Bodyguard 380 last year and on the first range trip we were having several FTFeed/FTE with it. We were using Remington UMC FMJ rounds. We returned to our LGS where we purchased and the owner fired rounds of PMC Bronze, Perfecta (inexpensive Walmart ammo) and some reloads a friend of his supplies him with. After firing some of our Remington rounds, he asked us if we had seen the sparks coming from the ejection port of the pistol. I did notice it when he was firing, but didn't while on our first range outing. He then fired his rounds, and we didn't see the sparks, and the pistol had no failures. Was he able to draw conclusions why the sparks were there, NO, but he said it wasn't a good thing, especially when the pistol was having associated issues when firing that brand of ammo. I can understand muzzle flash, but not sparks coming from the ejection port area of a pistol.
One post asked what ammo were you using and I didn't see a reply. I am curious also. I'm not using Remington UMC rounds anymore. Whatever rounds I have left, I will use up with my Ruger LCP. That badboy will eat anything! Anyway, just my two cents. Good luck and happy shooting! - Rick