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Discussion in 'M, C, L and S Series' started by ripsaw, Apr 27, 2009.
Is it possible to get away with just a barrel and a magazine?
Nope. You need the complete slide for a .40S&W to 9mm conversion or visa versa.
The barrel and magazine conversion (which is actually just a barrel change - the magazines for the .40S&W and .357SIG are interchangeable) will work to take a .40S&W to .357SIG. But from a 9mm to a .40S&W or the other way around, unfortunately you're stuck having to find the complete slide for the caliber you want to change to.
At this point, it's easier just to buy another pistol in the caliber you want than it is to find a complete slide conversion or someone willing to part with theirs.
Welcome to the club!
Thanks! This is a bummer, because you can do this with Glock in fourty... On the other hand, another excuse to buy another Steyr. Love the design of this gun!!!
I spoke with Steyr reps a few months ago and you can. The Steyr M's were originally designed for .40 SW then made to 9mm. The 9mm and 40 casing both work on the slide, extractor, etc. the only thing needed is the barrel and magazine to the caliber. I asked the same question since I was only able to get a S9 when I was looking for a S40 and my department carries .40SW. If you have the barrel and magazine the slide does not matter according to Steyr.
Really? When I asked Steyr about it I was told the opposite. They were selling 9mm conversion slides too - why not just the barrels and mags?
I'm not trying to call you out - on the contrary, if this is the case, I'll thank you for enlightening me! I guess I could take out my M9 barrel and drop it into my M40 and try it but just always took what I was told by Steyr as gospel.
I'm sure somebody here has both versions, so they could be compared.
Steyr sells convertion sets that include a magazine, and a complete slide with barrel, guide rod and recoilspring.
I would think the strenght of the spring and the outer diameter of the barrel would be different but as i only have the 9mm version i cannot be sure.
Here's the deal, gents:
You CAN get a 9x19 or 9x21 barrel that will fit your M40 or M40-A1 and will require only that you use 9mm magazines as well, and will function with the M40/M40-A1 slide....
The factory M9/M9-A1 slides are LIGHTER than the M40/M40-A1 slides to enable all Steyrs to use the same recoil spring.
You may find that some ammunition types will not function 100% with your M40/M40-A1 slide and a 9mm barrel...
It WILL work, but I would not bet my life on it!
Any more questions?
That was what I was told when I asked - basically that I would have reliability issues unless I went with the slide conversion. Selling point or fact, I'm not 100% sure but I'd bet that Babj has it right (he normally does). I'll have to see if I have a 9mm barrel lying around....
What about going with a 9mm slide (lighter slide) and a .40S&W barrel? Would that feasibly negate any of the cycling issues?
Is the barrel OD the same on a factory M9 vs M40? I would think that a factory 9mm barrel would be significantly smaller.
Can't do it because:
damn, I mispelled barrel .
It seems to me that the weight of M40 and M9 should be almost identical. At least s40 having 4mm longer barrel is heavier by 14g than s9.
Perfect example of why sleep is necessary for clear thought.
I got a reply from Steyr, that it should work.
Please elaborate on exactly what you asked and exactly what they replied.
I asked if just putting a 9mm barrel and a 9mm magazine into M40A1 would work and they said yes. Obviously, we have to verify that...
I thought that the slides for the M-A1 series .40 and 9mm were the same I thought the only thing that differed was the barrel and the magazines, or maybe that was just the .40 S&W and the .357 M-A1
Beside, verifying that and getting parts, I just need somehow to find damn 9mm ammo...
Also, the outer diameter of the two barrels are different.
So you just can not put a 9mm barrel in to a 40 slide. It will rattle all around.