Steyr S40 WOW

Status
Not open for further replies.
I have two Sigma 17 round mags for my Steyr M9 (when I get some money I'll go back and buy a bunch of the SIGMA 40 15-rounders and 9mm 17-rounders to complete my hoard... :evil: ).

Sturmruger is right that the modification is extremely simple and legal. The SIGMA mags lock the slide back after the last round, and the informal test that I did with just holding a loaded mag in place while firing proved to have flawless feed and function.

Enjoy. :evil:
 
The only full capacity sigma mags I've seen where in the $70-$100 range :eek:

I'm sure there are good deals out there though.


edit ... found a few on line
This guy says he has 16rd 9mm sigma mags for $50
http://www.pjs-steyraug.com/MAGAZINES.html

and here's a bunch of .40 full cap mags...

here's one for $70
http://www.gunbroker.com/auction/ViewItem.asp?Item=7271364

and one starting at $50 with a "buy now" of $70
http://www.gunbroker.com/auction/ViewItem.asp?Item=7311921

Bidding on this one is at $31 (but with 3 days to go, who knows how high it will get)
http://www.gunbroker.com/auction/ViewItem.asp?Item=7302195


and just to make you sick, here's 2 15 round .40 cal mags for only $19 for the pair!!! (but they are post ban so you gotta be a cop :fire: )
http://www.gunbroker.com/auction/ViewItem.asp?Item=7279926
 
Anyone have a picture of a Sigma mag inserted in an M9/M40? I assume it extends below the grip.
 
Handgun,
It does extend below the grip and is somewhat ugly, but then again it is 15-rounds of 40S&W or 17-rounds of 9mm... :evil:

I'll see if I can take a picture in the next couple of days...
 
Tet, I too would be very interested in seein a picture of the sigma mag inserted into the steyr....about how far do you think it extends out of the bottom? Are we talking an inch, or a few millimeters?
 
Arinvolvo,
I wasn't very clear in my last post. The magazine sits completely flush in the magwell, but the SIGMA mags have a finger-extension built into them. This finger extension is what extends below the standard Steyr grip. Otherwise, you can see none of the metal of the mag, except for in the back. The full extension past the grip is probably about .5".

sw_9mm_sigma.jpg
 
Sigma Mags

I am just got that auction for the two Sigma high cap mags, I got two 17rnd clips for $89. Not too bad if you ask me.

I am wondering if it would be possible to remove the Sigma finger extender and use a S40 bottom mag plate instead. That would keep it from looking like it was an altered clip. I bet I could get it to look almost stock. I will have those Sigma Clips next week. I will post pics as soon as possible. :neener:
 
Sturmruger,
I think that your best bet would be to go with the original baseplates of the mag. In order to get 17-rounds into those little tubes, the mag extends all the way down to the bottom of the fingerrest -- you just can't see it from the sides. If you were to put a standard Steyr baseplate on it (I don't think you could anyway considering how the engagement is different for the baseplates) then the extra metal would show where the mag extended past the base of the grip.

You'll see when you get them. It doesn't look that bad -- just a little out of place because the fingerrests extend quite a ways in front of and below the grip. No worries though in house-gun configuration. :cool:

Great price for those mags, BTW. :)
 
Baseplates

The baseplate on the S series mag is differant than the BP on the M series. The M series grip is a larger grip so they need the extra plastic extension on the M series mags to make them fit properly. On the S series the BP does not need to be extended, because the grip is just that much shorter. The metal mag body on the S and M series are exactly the same. The only differance is the BP.

My thought was why not use the slim baseplate from a S40 mag to make a Sigma magazine look like it is stock. The only concern I can think of would be what are legal ramifications of modifying a Sigma Mag that much.
 
Tet, you are right...I DIDNT understand your post about the length....I can deal with a larger base plate, but not so much with SS glinting from the bottom of my grip.

The oversized baseplate isnt anything that couldnt be handled with a bench grinder and a steady hand.

Just insert the mag, and outline the Steyr grip onto the top of the baseplate....then grind it to the outline.

Also for the other person that mentioned it, the M series baseplate would not be interchangeable, since it is about 1 inch tall..The plastic section extends up into the grip to take up all of the room that our other bullets are SUPPOSED to fill. ;)
 
Ok, i grabbed a couple of pics off the net, and photoshopped a sigma mag onto the steyr pistol...it dont look bad at all...see for yourself. I will post the stock pic, and then the sigma mag pic.




attachment.php
attachment.php
 
The only concern I can think of would be what are legal ramifications of modifying a Sigma Mag that much.
Click to expand...

I'm not a lawyer, nor do I play one on TV.

I believe that as long as the mag will still function in a Sigma and you don't increase the capacity, then you can do whatever you want with it.

Usual disclaimers apply.
 
Zund, I am relatively new to this board, but I have seen a few people's signatures refer to "TFL"...including yours...What is this? If you dont mind sharing.
 
AHA....I did some sleuthing....never mind that last post...apparently TFL was an online board similar to this one called The Firing Line. Apparently it shut down on the 1st of this year, and many of you migrated to this board.
 
arinvolvo,
Those photoshop pics of the Sigma mag in the Steyr are pretty good. The finger rest on the Sigma mags extend further in front of the grip, though, as well as being longer on the bottom. Other than that, it is pretty much how they look when inserted into the magwell.

What would be awesome (which you can't do without heavy modifications to the baseplate -- and I don't think it would still work in the Sigma because of clearance issues with its grips (i.e. no longer legal)) would be to turn the baseplate around so that it faces backwards. In this configuration, the fingerrest would sit flush with the back of the grip and it looks pretty good.

FWIW.
 
Well, as I suggested eariler, is it ok to just grind off the excess baseplate? Just take that pointy finger-rest part and grind it down to a nice curve.

I studied the dimensions a little better, and this is now my artists rendition of what it looks like...I didnt have the baseplate the right size, nor centered correctly. This is probably closer to the real thing...Looks like the steyr is about to "walk away" with that big foot....Notice however that part of the mag has been "cut off" by the pic.


attachment.php
 
That is just about exactly what it looks like and yes, you could Dremel off the plastic fingertip thingy and still be legal.

I, for one, don't mind a little ugly to get 17+1... ;)
 
Exactly what ARE the specifics of magazine alteration?? I have heard a couple people mention, that one thing or another would or would not be LEGAL....How much CAN you modify a magazine and still be legal?

Any links would be helpful.
 
arinvolvo,
As long as the magazine will still fit and function in the gun it was intended to work in any modifications you make are just fine legally. These include cutting a new mag catch hole (as long as it doesn't interfere with the original mag catch hole), or dremeling off a finger rest.

Things that wouldn't be legal would be bending feed lips, altering the mag body length so that it no longer fits in the original gun, altering the baseplate so much that it will no longer fit the original etc...
 
arinvolvo, do you have a source for that Massad Ayoob quote in your sig? I'd love to read the rest of the article :)
 
Zund...If i find it, I will let you know....but I actually found this quote in a different article about the steyr....and the author of THAT article had Quoted Massad...

The article that I am referring to is here:
http://www.pete-357.com/steyr.m.htm

The Massad quote is at the very last sentence of the article...I do believe that massad wrote an article on the M series in one of the major gun magazines...Guns&Ammo, or Combat handguns or something like that.

If I figure it out, I will let you know. And if you figure it out, let me know.
 
Status
Not open for further replies.

Similar threads

S
  • Locked
Holsters for Steyr S40 ??
Replies
15
Views
1K
santai
S
S
  • Locked
?? about Steyr S9 or S40
Replies
8
Views
1K
arinvolvo
A
T
  • Locked
Steyr S40 vs. Kahr P40
Replies
0
Views
886
twoblink
T
sturmruger
  • Locked
Need help with Steyr M 9X21mm
Replies
8
Views
1K
sturmruger
sturmruger
R
  • Locked
Steyr S40 Holster for CCW.
Replies
14
Views
2K
RatFink
R
Back
Top