Can't say for sure. Wife tried them out last night, and complained about problems - HOWEVER:
- She claims she could load one of the Metalforms only to 7 rounds, and not its full capacity of 9
- I loaded both to 9 just fine, using a MagLula. Not sure what the problem was here.
- She initially had one of the Metalforms not lock the slide back when finished shooting. This happened initially, and only once
Other than the base plate (they don't have "Kimber" on them), they appear to be duplicates of the original Kimber magazine. I've got to be careful how I present this, but I'm leaning toward operator error. If she'll let me (she's a bit proprietary about her Custom Aegis II), I'll run a box through tonight and see what my experience is with them. If I run into anything, I'll let you know.