After replacing all internal parts for my buddies Mauser HSC .380 and replacing the magazine springs with new ones, I still had problems with malfuctions. The only thing left for me to do was think outside the box. So I double springed the magazine. (two magazine springs in the same magazine) Much to my surprise, I just put a full box of mixed hollow point and ball .380 round through it with no malfuctions. I couldn't believed it. The only sacrifice is that now the magazine will only accept six rounds instead of seven. I guess it's the price to pay for full reliablity. I'm still trying to figure out if there is a Pearce Grip Adapter that will fit the HSC magazine, perhaps with a little modification.