Well, I took the three mags from my 39-2 to the range today along with my newly acquired 639 (with only one original mag.). All three of them fit and functioned flawlessly. My question is, what other models can I take magazines from and use with the 639? I’d like stainless (and OEM of course) but other options would also be appreciated.
These are stainless magazines but they also came in blue.
From left to right -
3913 magazine - too short, will not work in 639
639 magazine
Later 639 magazine with longer body and floorplate that closes gap
Currently produced 3906 magazine - works but sticks out a bit with gap.
Later magazines came in 8 or 9 round capacity.
No 7rd magazine works in the 639