XDS-40 to 10mm

StockIIBoss · January 12 2016 06:55:12 PM MST

I may be a little ahead of myself, but since the new XDS in 40 S&W has been released, it's time to think about whether the 40 and 45 share the same magazine. If so, the XDS 40 will be easy to convert. I downloaded pics of both to do an overlay, and they appear to be identical, so maybe there's a simple spacer in the 40 mag, like the S&W CS40. I converted a CS40, and it worked really well and surprisingly soft to shoot. It was a bit too large/heavy for me to carry, and eventually sold it.

I have appendix carried the XDS-45 in a kydex IWB holster with good results, so if I can convert the new XDS 40 to 10mm, it'll be something I would actually carry. Bye bye LC9s Pro...hello XDS-40 in 10mm? Just messin' about the lC9s, as I believe it's a fine example of a 100% reliable 7+1 concealed carry gun. But, the prospect of a really lightweight and narrow 10mm has me very intrigued.

sqlbullet · January 12 2016 08:01:36 PM MST

If the share the same frame it should be easily accomplished. And it would be a cool small 10mm

rw · January 12 2016 09:34:14 PM MST

If it can be done I will buy one to do

my_old_glock · January 15 2016 08:59:57 AM MST

Quote from: sqlbullet on January 12 2016 08:01:36 PM MST
If the share the same frame it should be easily accomplished. And it would be a cool small 10mm

I doubt it is exactly the same. The XD-S 9mm and 45ACP frames are almost identical except the 9mm XD-S magazine well has two ribs to take up space for the shorter bullet length of the magazine. A 9mm XD-S magazine will fit in a 45ACP XD-S magazine well side to side, but it will flop around front to back. It would be like trying to put a Glock 22 magazine in a Glock 20. Most likely any new 40S&W XD gun will have backwards magazine capability with their other 40S&W XD guns.

.

sqlbullet · January 15 2016 09:43:29 AM MST

So...can you put the XDs 9mm slide on the XDs 45 ACP frame?

If so, and if the XDs 40 follows the same pattern, you could buy a 45 frame, 40 upper, ream and alter 45 mags.

Getting to be a lot of work though.

my_old_glock · January 17 2016 10:18:09 PM MST

Quote from: sqlbullet on January 15 2016 09:43:29 AM MST
So...can you put the XDs 9mm slide on the XDs 45 ACP frame?

If so, and if the XDs 40 follows the same pattern, you could buy a 45 frame, 40 upper, ream and alter 45 mags.

Getting to be a lot of work though.

Yes, I guess you could do all that - if you can find just the 40S&W upper.

I wish Springfield would offer complete conversion uppers like Sig Sauer.

.

StockIIBoss · January 23 2016 04:31:51 AM MST

10mm ammo fits my xds-45 mags just fine. Maybe do a little lip tweaking is all. If that mag fits the xds-40 with a little creative rib-spacer filing (if that's what it has), the conversion will be easy enough. Just need to check the ejection port for proper size. If it's the same, that would be awesome. Then just ream the chamber to size and viola!

BTW, the CS40 used a heavy barrel to match the exterior barrel dimension of the CS45. It gave the CS40 a very stout barrel for 10mm. If I get this done, I'll be testing with Armscor 180 gr wimp stuff, and find a friend to shoot some Underwood thru it! ${$default_laugh_smiley}$

rw · January 23 2016 05:53:07 AM MST

They probably would not be a friend anymore after that.. ${$default_grin_smiley}$

Pablo · January 23 2016 06:06:55 AM MST

Quote from: StockIIBoss on January 23 2016 04:31:51 AM MST
10mm ammo fits my xds-45 mags just fine. Maybe do a little lip tweaking is all. If that mag fits the xds-40 with a little creative rib-spacer filing (if that's what it has), the conversion will be easy enough. Just need to check the ejection port for proper size. If it's the same, that would be awesome. Then just ream the chamber to size and viola!

BTW, the CS40 used a heavy barrel to match the exterior barrel dimension of the CS45. It gave the CS40 a very stout barrel for 10mm. If I get this done, I'll be testing with Armscor 180 gr wimp stuff, and find a friend to shoot some Underwood thru it! ${$default_laugh_smiley}$

Do not hesitate. Do this.

my_old_glock · January 23 2016 01:17:21 PM MST

Quote from: StockIIBoss on January 23 2016 04:31:51 AM MST
10mm ammo fits my xds-45 mags just fine. Maybe do a little lip tweaking is all. If that mag fits the xds-40 with a little creative rib-spacer filing (if that's what it has), the conversion will be easy enough. Just need to check the ejection port for proper size. If it's the same, that would be awesome. Then just ream the chamber to size and viola!

Here are some pictures of my 9mm XD-S magazine well. The two ribs should be visible. The width of my XD-S magazine is 0.560", and the length is 1.265".

The ejection port on the 9mm is smaller than the length of the 10mm cartridge (~1.260"). The port length of my 9mm XD-S is 1.215". Chances are that the XD-S in 40S&W would have an ejection port similar to the 9mm as opposed to the 45ACP. The ejector may also need t be replace or cut shorter on the 40S&W XD-S.

If the ejection port on the 40S&W XD-S is the same size as the 45ACP XD-S, you might not need to ream the barrel chamber (but if you removed the magazine ribs you might as well go all the way). I have loaded some 10mm using 40S&W brass. You might be able to do the same and just use the stock 40S&W barrel. Below is a picture of 40S&W brass used to load 10mm. The throat of the 40S&W might interfere with 10mm length of the bullet. A stepped bullet like the Remington Golden Saber would probably make it work.

DM1906 · January 26 2016 12:22:48 AM MST

You only need to eject EMPTY cases (no bullet). It may work in-action, but less then ideal. Pretty tight.

rw · January 26 2016 12:36:51 AM MST

Quote from: DM1906 on January 26 2016 12:22:48 AM MST
You only need to eject EMPTY cases (no bullet). It may work in-action, but less then ideal. Pretty tight.

Its pretty inconvenient at a minimum to have to drop the mag to clear a jam if you cannot eject a bad loaded round, could be life threatening if you are in a self defense situation.

sqlbullet · January 26 2016 06:17:09 AM MST

If this were going to be a range only gun I could see living with having to drop the mag to eject a live round. But not on a small defensive gun.

Looks like this may be a challenge.

DM1906 · January 26 2016 07:41:43 AM MST

Quote from: rw on January 26 2016 12:36:51 AM MST
Quote from: DM1906 on January 26 2016 12:22:48 AM MST
You only need to eject EMPTY cases (no bullet). It may work in-action, but less then ideal. Pretty tight.
Its pretty inconvenient at a minimum to have to drop the mag to clear a jam if you cannot eject a bad loaded round, could be life threatening if you are in a self defense situation.

Of course. But we aren't discussing a primary defensive weapon. As SQL said, range time and recreational entertainment use. I would NEVER suggest any questionable platform be relied upon for anything more than to tickle your fancy or enhance your cool. Can do and should do are not the same.

StockIIBoss · May 27 2016 11:13:05 AM MDT

I'm still excited about the conversion. Really just waiting for a XDS-40 to show up at a LGS. I'll have my caliper at the ready! It always pleases counter sales when you aren't there to buy. LOL

From the Springfield site pics I've overlayed, it looks like the ejection port is slightly smaller on the 40's slide, so barrel lockup dimensions will also be different. As mentioned, ejecting a live round would be via the grip if that's the case. But is it worth the 'cool' factor to have a 10mm as thin as the XDS. Yes? I mean YES!

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