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Discussion Starter · #1 ·
I picked this gun up on Friday and have had it to the range a few times now but never noticed it until my buddy asked me if it was a .40 caliber. I told him no, it's a 9mm. He then pointed out on the 16 round extended mag that it says SA-9/40 on the mag extension. Maybe the extensions are the same for both guns and they just got it mixed up when they packed up the box or it's used for both.

 

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Look on the bottom of the floor plate. The actual caliber is listed there. What you are looking at is the X-Tension sleeve which is used on both the 9 and 40 mags.
 

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Discussion Starter · #3 ·
Yes it does say 9mm on the mag itself and it was what I figured, x-tension is used for both.
 
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