New Sig Pistol carbine MPX

[ARCHIVED THREAD] - New Sig Pistol carbine MPX (Page 1 of 3)

Posted: 12/15/2012 12:42:49 PM EDT

Have u guys seen the Sig MPX. Looks pretty badass, cross between MP5 and AR. There is a small write up on it on firearms blog.

My copy foo is weak.

Posted: 12/15/2012 3:30:41 PM EDT

[#1]

It looks so cool but like all Sigs it will be $$$$$$$$$$$ and I will never be able to afford one.

Posted: 12/15/2012 6:32:37 PM EDT

[#2]

http://www.gunsholstersandgear.com/2012/12/10/sig-mpx-official-name-for-the-new-smg/

Posted: 12/19/2012 9:25:20 AM EDT

[#3]

I would have to say that is one ugly gun. If it has a nice trigger though a lot of rough looks can be ignored. I'm trying to imagine what a 16" barrel will look like. My guess is it will be announced and then never sold.

ETA: I take back everything I said about the bad looks: Tactical Life article with more pics.

This would be sweet as a suppressed SBR using subsonics.

Posted: 12/19/2012 9:48:20 AM EDT

[#4]

Gotta wonder now if they will still be able to build it as a PCC for sale in the USA.

Posted: 12/19/2012 5:01:06 PM EDT

[#5]

Definitely interested in this. Unfortunately the timing might be poor...

Posted: 12/22/2012 7:56:43 AM EDT

[#6]

Yeah that sucks. May be Sig will make it to accept Glock mags....lol

Posted: 1/11/2013 10:15:58 AM EDT

[#7]

I have no problem with purpose built mags. 226 would be cool but I would rather have good reliable 30 rounders

Posted: 1/11/2013 10:16:28 PM EDT

[#8]

So how does it operate? Did they say gas operated? How does that work with such a low pressure round like 9mm?

Posted: 1/12/2013 4:36:40 AM EDT

[#9]

It looks great, but at the price they'll ask it will not be very popular. Maybe with executive protection guys or something. I think i would rather build a DDLES 9mm lower.

Too bad RRA doesn't make the PDW in 300blk. The RRA PDW pistol in 300blk SBR'd with folding stock would be perfect.

Posted: 1/12/2013 9:59:53 AM EDT

[#10]

Quoted:
It looks great, but at the price they'll ask it will not be very popular. Maybe with executive protection guys or something. I think i would rather build a DDLES 9mm lower.

Too bad RRA doesn't make the PDW in 300blk. The RRA PDW pistol in 300blk SBR'd with folding stock would be perfect.

Do you know what the price will be?

Posted: 1/12/2013 11:19:18 AM EDT

[#11]

I'm in for one. It'll likely be cheaper and a hell of alot less hassle than putting together a reliable MP5 clone.

Posted: 1/14/2013 1:20:58 PM EDT

[#12]

I like it, but I'm curious as to the legality of the "compensator". If it is legal, that would be an awesome way to get a cheap suppressor, get your stamp and order the shroud...

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Posted: 1/19/2013 9:11:30 AM EDT

[#13]

Quoted:
So how does it operate? Did they say gas operated? How does that work with such a low pressure round like 9mm?

9mm is not as low a pressure as you think. In a 9" barrel there is still pressure to operate a "small rod" and a "small bolt bolt carrier combo" but not a full size AR bolt and bolt carrier combo.

A 9" barrel with a gas port at about 5" provides plenty of push as long as you design the system to work with the pressures you have.

Even Ammo as light as Federal Champion.

Posted: 1/21/2013 5:07:14 PM EDT

[#14]

http://youtu.be/1S_aqUDb62Q

I want to know how they convinced the ATF that a baffle stack is a "compensator". The Sig rep said that it was put on there to make the barrel length civilian legal, so I'm guessing it doesn't require a stamp to buy the firearm. Very weird, since, as I understand it, even making one baffle without a tax stamp is illegal.

Having an item reviewed by the Firearms Technology Branch is like a box of chocolates - you never know what you're going to get.
ETA:

Nevermind, "NFA Rules Apply"

http://www.sigsauer.com/CatalogProductDetails/sig-mpx-c.aspx

Posted: 1/21/2013 5:44:57 PM EDT

[#15]

Quoted:
http://youtu.be/1S_aqUDb62Q

I want to know how they convinced the ATF that a baffle stack is a "compensator". The Sig rep said that it was put on there to make the barrel length civilian legal, so I'm guessing it doesn't require a stamp to buy the firearm. Very weird, since, as I understand it, even making one baffle without a tax stamp is illegal.

Having an item reviewed by the Firearms Technology Branch is like a box of chocolates - you never know what you're going to get.

ETA:
Nevermind, "NFA Rules Apply"
http://www.sigsauer.com/CatalogProductDetails/sig-mpx-c.aspx

While I'm no NFA expert, it does appear that they are counting the baffles as a "muzzle brake". Under the "Specification" page on that link, it shows: Barrel Length: 16 in total with 165 mm/6.5 in barrel W/ 242 mm/9.5 in muzzle brake permanently attached

Posted: 2/3/2013 6:12:45 PM EDT

[#16]

Posted: 2/3/2013 6:16:11 PM EDT

[#17]

Quoted:

Quoted:

http://youtu.be/1S_aqUDb62Q

I want to know how they convinced the ATF that a baffle stack is a "compensator". The Sig rep said that it was put on there to make the barrel length civilian legal, so I'm guessing it doesn't require a stamp to buy the firearm. Very weird, since, as I understand it, even making one baffle without a tax stamp is illegal.

Having an item reviewed by the Firearms Technology Branch is like a box of chocolates - you never know what you're going to get.
ETA:

Nevermind, "NFA Rules Apply"

http://www.sigsauer.com/CatalogProductDetails/sig-mpx-c.aspx

While I'm no NFA expert, it does appear that they are counting the baffles as a "muzzle brake". Under the "Specification" page on that link, it shows: Barrel Length: 16 in total with 165 mm/6.5 in barrel W/ 242 mm/9.5 in muzzle brake permanently attached

According to the latest AR15.com newsletter, you are correct. It is a Title I (non-NFA) item! The can doesn't add length to the weapon, and you can still cross state lines without ATF permission. I love it! Seriously, I'm ready to trade my Beretta CX4 for it right now (and I love my Beretta)!

Posted: 2/5/2013 5:45:01 PM EDT

[#18]

That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

Posted: 2/6/2013 6:42:39 PM EDT

[#19]

Quoted:

That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

Posted: 2/6/2013 7:25:01 PM EDT

[#20]

Quoted:

Quoted:
That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

Posted: 2/8/2013 2:00:32 PM EDT

[#21]

Quoted:

Quoted:
That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

might as well buy an mp5

we'll see. I ain't paying 2 grand for a 9mm

Posted: 2/8/2013 2:07:30 PM EDT

[#22]

Quoted:

Quoted:
That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

might as well buy an mp5

we'll see. I ain't paying 2 grand for a 9mm

Please let me know where I can find a MP5/HK94/SP89 for 2 grand.

Posted: 2/8/2013 3:26:35 PM EDT

[#23]

Quoted:

Quoted:

That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

might as well buy an mp5

we'll see. I ain't paying 2 grand for a 9mm

Please let me know where I can find a MP5/HK94/SP89 for 2 grand.

Especially one that can be converted from 9mm NATO to .357 Sig to 40S&W in a matter of minutes.

Posted: 2/8/2013 4:03:13 PM EDT

[#24]

You can hardly put together a decent clone MP5 for much less than 2000. If you had one built it certainly would be over.

Posted: 2/9/2013 7:10:51 AM EDT

[#25]

Quoted:

Quoted:
That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

might as well buy an mp5

we'll see. I ain't paying 2 grand for a 9mm

Please let me know where I can find a MP5/HK94/SP89 for 2 grand.

Especially one that can be converted from 9mm NATO to .357 Sig to 40S&W in a matter of minutes.

Your missing my point. I "value" a 9mm carbine somewhere under 1200 dollars and that's my personal opinion. Doesn't matter wether its an mp5, an mp5 clone or any thing else in 9mm. I know a semi auto mp5 can go for 4or5 grand. Lets not get caught up in the details.

Also, I could care less about the 357 conversion and quick change barrels, so far, gimmicks like that have failed. The only way that works is if you can convert to something cheap and plentiful to shoot, like .22. They will promise it at first and then when sales don't meet expectations they will never be available just like the ACR.

Hate to see it happen but Ive noticed a pattern with these over priced reinventions of the wheel. Kris super V, ACR, Fn2000, and others I'm sure. Same old story,
too much money for what you get, aftermarket upgrades and improvements never get developed because relatively few people have the gun, and then you see them on gunbroker after the novelty wears off, buyer wants to recover what money he can and move on to the next fad.

And the real deal breaker is the expensive magazines, way to shoot yourself in the foot there SIG!!!!!

Like I said, we'll see how this pans out. I hope I'm wrong, I would really like a good quality 9mm carbine at a reasonable price for my collection.

Posted: 2/9/2013 1:56:31 PM EDT

[#26]

Quoted:

Quoted:

That is a neat little gun

Do very much want

I heard the MAC guy say about a thousand bucks, believe it when I see it though.

http://www.youtube.com/watch?v=yeOBTCC9kl8

So which is it, $1000, or $2200 as shown here http://www.ar15.com/forums/t_6_45/385844_SIG_MPX__Official_Name_for_the_New_SMG.html&page=3

I would bet a thousand bucks it will be more than a thousand bucks

might as well buy an mp5

we'll see. I ain't paying 2 grand for a 9mm

Please let me know where I can find a MP5/HK94/SP89 for 2 grand.

Especially one that can be converted from 9mm NATO to .357 Sig to 40S&W in a matter of minutes.

Your missing my point. I "value" a 9mm carbine somewhere under 1200 dollars and that's my personal opinion. Doesn't matter wether its an mp5, an mp5 clone or any thing else in 9mm. I know a semi auto mp5 can go for 4or5 grand. Lets not get caught up in the details.

Also, I could care less about the 357 conversion and quick change barrels, so far, gimmicks like that have failed. The only way that works is if you can convert to something cheap and plentiful to shoot, like .22. They will promise it at first and then when sales don't meet expectations they will never be available just like the ACR.

Hate to see it happen but Ive noticed a pattern with these over priced reinventions of the wheel. Kris super V, ACR, Fn2000, and others I'm sure. Same old story,

too much money for what you get, aftermarket upgrades and improvements never get developed because relatively few people have the gun, and then you see them on gunbroker after the novelty wears off, buyer wants to recover what money he can and move on to the next fad.

And the real deal breaker is the expensive magazines, way to shoot yourself in the foot there SIG!!!!!

Like I said, we'll see how this pans out. I hope I'm wrong, I would really like a good quality 9mm carbine at a reasonable price for my collection.

I agree with you 100% on the magazine cost. I hope LE and MIL picks up this item to drive down the costs. If you want a good 9mm carbine for <$1200, look at the Beretta CX4. I have one in .40S&W and it's a blast. The 9mm version gets you better hi cap options, too.

Posted: 2/9/2013 2:14:22 PM EDT

[#27]

I dont see why people harp on magazines so much. I would much rather have a purpose built magazine that was spendy than try and build a gun around a existing mag.

Posted: 2/9/2013 7:54:05 PM EDT

[#28]

Quoted:

I agree with you 100% on the magazine cost. I hope LE and MIL picks up this item to drive down the costs. If you want a good 9mm carbine for <$1200, look at the Beretta CX4. I have one in .40S&W and it's a blast. The 9mm version gets you better hi cap options, too.

Lgs had one not too long ago I should have took it home.

Quoted:
I dont see why people harp on magazines so much. I would much rather have a purpose built magazine that was spendy than try and build a gun around a existing mag.

I would rather have a purpose built magazine also, it just seems to me that they would sell 3 or 4 times as many magazines if they were half the price.

Don't get me wrong, I see potential here, If they played their cards right they could put everything else in this class to bed. It could be the 10/22 of 9mm carbines as long as the design proved to be reliable.

Posted: 2/11/2013 8:43:52 AM EDT

[#29]

I'm just glad to see more PCCs hitting the market like this and the new Caracal carbine. I'll be curious to see what the Sig sells for.

Posted: 2/14/2013 12:12:53 PM EDT

[#30]

While I'm glad there's another choice, I don't see what this does that I can't do with a Mini-Uzi, for less money, with more mags available right now.

Posted: 2/14/2013 3:06:25 PM EDT

[#31]

Quoted:
While I'm glad there's another choice, I don't see what this does that I can't do with a Mini-Uzi, for less money, with more mags available right now.

How is the optic mounting on the UZI? It is pretty tought isnt it?

Posted: 2/14/2013 5:36:38 PM EDT

[#32]

Quoted:

While I'm glad there's another choice, I don't see what this does that I can't do with a Mini-Uzi, for less money, with more mags available right now.

I'll take one integrally suppressed Uzi that easily swaps between 9mm and .40 S&W with picatinny rails, please. Where do I buy?

Posted: 2/16/2013 7:33:23 PM EDT

[#33]

There's replacement top covers for the Doctor optic or the T1, but it's certainly easier/better on the MPX. I don't see integral suppression as a plus since they're so expensive and the tax. A company called Barrelexchange sells barrels in .40 (and .357 SIG, and .45 Auto) - all you need to do is swap the barrel bolt and mag. And there are rail forends. Really, both are just 9mm carbines - except one is available right now, costs less, and has available parts and magazines (which are cheaper too).

Posted: 2/16/2013 7:39:11 PM EDT

[#34]

Quoted:
While I'm glad there's another choice, I don't see what this does that I can't do with a Mini-Uzi, for less money, with more mags available right now.

Gas operated and closed bolt for one. The sig was designed around a closed bolt; the uzi was not. As far as recoil goes gas operated>blowback

Posted: 2/17/2013 6:30:33 AM EDT

[#35]

Quoted:
There's replacement top covers for the Doctor optic or the T1, but it's certainly easier/better on the MPX. I don't see integral suppression as a plus since they're so expensive and the tax. A company called Barrelexchange sells barrels in .40 (and .357 SIG, and .45 Auto) - all you need to do is swap the barrel bolt and mag. And there are rail forends. Really, both are just 9mm carbines - except one is available right now, costs less, and has available parts and magazines (which are cheaper too).

What do the 16rd .45 Uzi mags cost?

Posted: 2/17/2013 10:27:29 AM EDT

[#36]

Quoted:

Quoted:
There's replacement top covers for the Doctor optic or the T1, but it's certainly easier/better on the MPX. I don't see integral suppression as a plus since they're so expensive and the tax. A company called Barrelexchange sells barrels in .40 (and .357 SIG, and .45 Auto) - all you need to do is swap the barrel bolt and mag. And there are rail forends. Really, both are just 9mm carbines - except one is available right now, costs less, and has available parts and magazines (which are cheaper too).

What do the 16rd .45 Uzi mags cost?

Doesnt really matter as the sig isnt available in 45.

I would imagine the trigger on the sig will be quite a bit better than the uzi as well

Posted: 3/15/2013 9:37:41 PM EDT

[#37]

yawn, another pistol carbine in 9mm...

A semi auto in .45 makes so much more sense. Esp if you dont reload, good subsonic 9mm is almost as pricey as 230gr .45.

Posted: 3/15/2013 10:09:39 PM EDT

[#38]

Quoted:
yawn, another pistol carbine in 9mm...

A semi auto in .45 makes so much more sense. Esp if you dont reload, good subsonic 9mm is almost as pricey as 230gr .45.

This is different.........

Posted: 3/16/2013 12:37:33 AM EDT

[#39]

To each his own but I like shooting the less expensive more common ammo. 9mm can even be reloaded for quite a bit less than 45

Posted: 3/19/2013 10:28:44 AM EDT

[#40]

The biggest advantage I see with this gun is that it's got a locking bolt. It will be much quieter suppressed than say an UZI or MAC or 9mm AR15. I don't know where it will stand in relation to an MP5 in terms of "quietness," but I do know the roller-locked 9mm guns are already much better sounding that the aforementioned direct blow-back guns.

The downside is that this turd is probably going to cost $2000+ and I wouldn't buy it in a million years over an MP5 at that price. At around $1250 I'd be looking closely at it, and at $1000 it would be a no-brainer. For reference, I just paid a bit more than $2200 for a very nice MP5-K PDW clone.

Posted: 3/19/2013 11:06:38 AM EDT

[#41]

Who built your clone?? I am putting one together now with a Black Market upper that I figure will run around 1500-1700 when I am done.

I would be happy to pay a few bucks more for a modern system with a factory warranty

Posted: 3/19/2013 1:13:00 PM EDT

[#42]

Quoted:
Who built your clone?? I am putting one together now with a Black Market upper that I figure will run around 1500-1700 when I am done.

I would be happy to pay a few bucks more for a modern system with a factory warranty

D.J. Getz. Check on HK Pro. He has his own subforum.

Posted: 4/20/2013 9:49:52 PM EDT

[#43]

Nice gun but as a PD I would go with a P90 before a 9mm subgun. It has the ballistics on soft target that a 7in AR 9dw has. It has the ability to defeat body armor and auto glass with ease. IT does not over penetrate (but it does have more penetration than FN reps will tell you,) and the pistol with the 5.7 is the ballistic equivalent to a 45 apc. Now if we could only get them to redesign their pistol to add some user friendly options like the pm30 with the added ballistics (yes the pm30 is a 22winmag but the 22winmag does not start to approach the 5.7 until around the 20inch barrel mark and if you could hide that in your pants it would be very formidable.)

As for a 9mm subgun. I shot my BW5 in a 3gun match a few years back. At 100 yards I was hitting plates just like an AR and the momentum of the 115gr fmj was impressive on the texas star. IT actually knocked plates down with more of a push than a 223. This was a spectical but maybe not as effective in soft tissue I have no issue placing all rounds into a torso target at 25 yards on a full auto mag dump on an MP5. Now look at the 357 sig which is a 9mm pushed into a 40cal case. You see a 357 pistol and you get only 100 -200 fps increase over 9mm and very little increase over 9mm+p. But you notice the muzzle flash right? Well that is the same with the 5.7 pistol. So if you put this round in a say 10in carbine it will probably allow the powder to completely burn and push the bullet out of the barrel faster.

In a 10in 357 sig carbine you are probably looking at between 1900 to 2000 fps with a 124-127g projectile. A 115 grn projectile is around would easily approach 6.8 velocities. Now make some design changes and get proper ATF paperwork to make AP ammo you could design a bullet similar to the critical duty or powerball but with a steel perpetrator instead of plastic and defeat some armor. Proper marketing along with testing would probably push this round over the edge. Sig could easily go from just pistol to pistol and carbine source along with ammo source for man PDs.

Posted: 4/25/2013 4:49:05 PM EDT

[#44]

MSRP - $1799-1999

Posted: 5/2/2013 10:29:55 AM EDT

[#45]

Quoted:
MSRP - $1799-1999

Yikes. Well, I'm out then.

Posted: 5/5/2013 8:51:01 AM EDT

[#46]

Quoted:

Have u guys seen the Sig MPX. Looks pretty badass, cross between MP5 and AR. There is a small write up on it on firearms blog.

My copy foo is weak.

saw/handled couple at 2013 NRA Convention in Houston.

Here are crappy cell phone pictures.

Posted: 5/5/2013 2:46:20 PM EDT

[#47]

you can see where the rail is actually two pieces screwed together. looks like the solid rail goes about 4.5" then anything longer than that is bolted on. That kinda sucks.

Posted: 5/6/2013 6:11:40 AM EDT

[#48]

Quoted:
MSRP - $1799-1999

*deflating fart noise*

Posted: 5/6/2013 8:37:27 PM EDT

[#49]

Quoted:

Quoted:

Have u guys seen the Sig MPX. Looks pretty badass, cross between MP5 and AR. There is a small write up on it on firearms blog.

My copy foo is weak.

saw/handled couple at 2013 NRA Convention in Houston.

Here are crappy cell phone pictures.

http://i1281.photobucket.com/albums/a504/fatlazyslow/SIG-MPX-NRA-Houston-2013/IMAG0061Medium_zpsb74a9bb8.jpg

http://i1281.photobucket.com/albums/a504/fatlazyslow/SIG-MPX-NRA-Houston-2013/IMAG0066Medium_zpsf535917e.jpg

http://i1281.photobucket.com/albums/a504/fatlazyslow/SIG-MPX-NRA-Houston-2013/IMAG0065Medium_zps893a1535.jpg

http://i1281.photobucket.com/albums/a504/fatlazyslow/SIG-MPX-NRA-Houston-2013/IMAG0064Medium_zpsa04372d6.jpg

http://i1281.photobucket.com/albums/a504/fatlazyslow/SIG-MPX-NRA-Houston-2013/IMAG0063Medium_zpsd8e47340.jpg

How was the balance? I knew the can was larger diameter than most, but that one looks huge. It should make for good sound reduction though.

Posted: 5/7/2013 7:14:28 AM EDT

[#50]

was GOOD. Very handy and seemed like it points to the target very quick. You have to hold it SMG style: toward center of your body, square stance, hunched shoulder.

Quoted:
How was the balance? I knew the can was larger diameter than most, but that one looks huge. It should make for good sound reduction though.

[ARCHIVED THREAD] - New Sig Pistol carbine MPX (Page 1 of 3)

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