I will say this much, the pistol is sensitive to any build up of soot from repeated firings at the range.
The only time I've seen a BG380 not lock the slide back after the last round was due to the red plastic follower sticking in the mag. Not popping up all the way after that last round.
Clean very thoroughly and wipe dry, I use a foaming gun cleaner and I hose it down everywhere inside and I work the trigger & move the slide lock up/down & work the cleaner in, using a small toothbrush I scrub anywhere & everywhere it can reach & wipe dry with paper towels, cotton patches & Q-tips. I use q tips over the trigger spring, the top portion of the trigger inside the pistol, I work it back & forth drying it off with the Q-tip... It will amaze you how much soot is in there... shake excess cleaner out if you have too and make sure the entire pistol frame is bone dry. The same goes to the slide. Apply ONE drop of gun oil to the lube points and NO more... If you overdo the lube its possible that excess oil can wick down into other parts of the pistol and soot from firing at the range can stick to it and that my friend can and will cause performance issues such as this... Not saying you're doing it, but I have seen it before...
The BG 380 IS ammo sensitive. I know that certain brands have a harder primer, brands such as PPU, Wolf, Tula, are a few that come to mind... If you or any of you guys experience light strikes, IE, round not going off after you pull the trigger, but maybe goes off if you pull the trigger again, then change ammo brands. I've been using Monarch which is found at the Academy, its made by PPU but after hundreds of rounds, I havent had a light strike, not once. WWB flat point, Hornady american gunner JHP & federal american eagle all fed well in my M&P 380.
Abbreviation for occasional failure to lock slide on empty mag? sure its, "make sure you dont forget to take apart your magazines & clean them real good"
