RichieMac
Member
- Joined
- Jun 22, 2025
- Messages
- 17
- Reaction score
- 17
Here are a few close-ups of the front and backside.
^this^As I recall the 3904/3906 mags were initially 8rd red/orange follower plastic base - similar to the 39-2 and 439 8rd mags except for baseplates and followers. As I recall the 3904/3906 mags work in the 39-2/439 but they stick out slightly - while the 39-2/439 mags do not work in the 3904/3906?
The 9rd 3904/3906/909 mags were available later as replacements taking advantage of the additional metal sleeve length after the 3913 came out with the shorter 8rd capacity mags and the 9rd mags came standard with the later 909 pistols - so be aware there are longer 3904/3906 geometry 8rd mags similar to the one pictured except for round count markings which may be confused with shorter correct 3913/3953 8rd mags. Dont assume an 8rd single stack 9mm mag is the 3913/3953 variety.
And yes the 3904/3906 mags will work in a 3913/3953 but they will stick out exposing part of the metal sleeve at the base. I seem to remember an old post saying that the feed area at the top of a longer mag was damaged by repeated hard insertion of the mags in the shorter grip without a spacer but maybe that was a 5906 mag in a 6906.
Very early on, S&W shipped the 3913s with a different flat based magazine, one round fewer, fit completely flush with the grip frame, than the later version they switched to, and we're most familiar with. As I recall these early flat based mags han a slightly shorter mag body, thus one less round, and used a metal base like the ones you show here. I'm not sure, but..... that may be the issue, if you're trying to install these early style bases on the later mag body. The lips of the later mag body might be different so as to accommodate the plastic flat and hooked mag bases. BTW, these early truly flat based mags are quite rare and most folks might not even realize what they are.
If I find a 3913 magazine, it makes the whole gu show worth it. I was lucky enough to find two on a dusty shelf at a range shop where they had sat for years still sold at the original price. Usually, I tracke them down at gunshows and pay through the nose. Fir range purposes, i am not above using Model 39 magazines which stick out below the magazine well, but cycle in the 3913 perfectly.
This is true. I have gotten some excellent deals on 3rd gen mags since I started looking. Got a 1006 mag in August for $40 at a pawn shop.Every once in a while I'll find one and the seller doesn't know anything about it and the price is reasonable. A lot of FFLs aren't at all familiar with the 3rd Gens these days.