The 4516 is a great compact 45. I have a 4516-2 and it still doesn't have mim parts (if such things worry you). The hammer and trigger are, however, blued instead of flash chromed like the hammer and trigger should be on your 4516 no dash. I have only had mine for around 6 months now, but haven't had any issues with it in that time. I do like the hogue grips on mine, over the factory grips, but just give them a try to see which ones fit your hands best. Magazines can be found at most various gun parts websites but a few would be midwayusa, cdnn, bud's gun shop, cheaper then dirt, etc.
Enjoy your 4516.

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J.D. Roy