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I am not waiting any longer for the ambiguous responses that are coming from SIG. Hell, it took their product development team 3 years to get to this state of confusion. Life is to short to wait for SIG's "ever changing" timetable of accessories for this platform.

So, I just sent mine out for this service. They cut and thread the barrel at 4.5in with 1/2x28 or 1/2x36 threading to replicate the MPX-K. And they cut down the picatinny handguard to replicate the K size, and refinish in CERAKOTE. I don't think he is cutting the keymod version just yet. He will ream out an A2 birdcage to 9mm for $10, to work on this barrel.

Total package price $250. You only need to send in the barrel and handguard. Zach advertises a short turn around time.

www.zrtacticalsolutions.com

ZRTS
Noblesville, IN

This message has been edited. Last edited by: armedjetflyer,
 
Posts: 75 | Location: USA | Registered: October 23, 2011Reply With QuoteReport This Post
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quote:
Originally posted by ctsheepdog:
quote:
Originally posted by Engineer:
I asked Liberty about 9mm performance and their response was:

"It is about 5 dB louder on 9mm. We are running in the lower 130s with it in 9mm on the host weapons we have here. The Mystic X runs in the upper 120's with the same weapon platforms."

I did not ask about backpressure but I assume it will be lower with the larger aperture and the monocore looks a lot less restrictive that the Mystic cores.

Thanks Eng. This is going to be tough to gauge until someone does a head-to-head, but it sounds like it will be a compromise between optimal muzzle sound and blowback.


It will most definitely have less back pressure, over bored and the baffle stack has a lot of space between baffles. I bet the FRP is insane. That's one area the Mystic X always suffered, but the same can be said for the Osprey.

Over the weekend i finally fired my Octane 45 on the MPX, since I'm in a neighborhood i only did a few shots because my curiosity was getting the best of me, definitely need to spend more time testing.

Anyways, i compared Oct 9 vs Oct 45 both using SilencerCo 3 lug on TrosUSA adapter with EMCON 147gr suppressor ammo. Oct 45 had no perceived additional blowback and was very pleasant. Oct 9 had a noticeably quieter muzzle report but with added blowback.

Within the next 2-4 weeks my SG-2 should be approved and I'll do a more in depth comparison using more ammo types, throw in the Oct 45K and Griffin Revo 9K and maybe add the 9mm end caps to the Oct 45 if time allows. Right now I'm thinking a .45 with 9 end cap could be just the ticket but i have high hopes for the SG-2.
 
Posts: 63 | Location: St. Louis | Registered: June 11, 2015Reply With QuoteReport This Post
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quote:
Originally posted by Elec540:
You have to log into facebook

Nope, still doesn't work. Mind posting a screenshot or just a copy and paste of the text? Where exactly was it posted? Not seeing it on Sig's FB page...
 
Posts: 55 | Registered: May 27, 2006Reply With QuoteReport This Post
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I paste the screen shot tonight
 
Posts: 198 | Registered: April 06, 2014Reply With QuoteReport This Post
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Sorry, only 1/2x28 or 1/2x36 threading. Zach will ream out a standard A2 birdcage to 9mm for $10, to fit on this barrel.

I will post pictures when it comes back, along with the SIG telescoping stock(if it ever arrives).
 
Posts: 75 | Location: USA | Registered: October 23, 2011Reply With QuoteReport This Post
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News Flash! New SilencerCo silencer, specs seem almost too good to be true, can't wait to get my hands on one! That is a similar dB rating less than their a full size models about twice is length.

SilencerCo Omega 9K Specs:

Length: 4.7”
Weight: 7.2 oz
Diameter: 1.475”
Finish: Black Oxide
Sound Rating: 124.9 dB with 147gr Ammunition

This message has been edited. Last edited by: CRASH_PRO,
 
Posts: 63 | Location: St. Louis | Registered: June 11, 2015Reply With QuoteReport This Post
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Sig Sauer In reference to Magazines:

Although there have been some demonstrated levels of functionality when using magazines and uppers of different generations, we recommend using like generation components for optimal reliability.

*Will I still be able to purchase Gen1 9mm Magazines?
Yes, it is Sig Sauer’s intention to provide support to MPX G1 customers for all components of the firearm. Magazines in other calibers will only be available as G2 magazines.

In reference to barrels/caliber X-change:

All customers will be able to take full advantage of the MPX Caliber-X-Change Kits. If you are an MPX G1 owner, Sig Sauer will offer you the opportunity to purchase a complete MPX G2 Upper Receiver in the caliber of your choice, other than 9mm, at a reduced cost that will be the equivalent retail cost of the corresponding MPX Caliber X-Change Kit. This is limited to one purchase per MPX serial number.

The Barrels from Gen1 and Gen2 MPX are different enough to not permit compatibility. However, with the purchase of your first “Caliber-X-Change kit you will receive a full Gen2 upper. If you wish to purchase other/future caliber kits they will fit the Gen2 upper only (as specified by product description). The Gen1 will remain 9mm. MPX Gen1 Cal-X Kits are being created in 9mm only. This allows the customer to purchase G1 barrel assemblies in 4.5-inch, 6.5-inch and 8-inch variations. 16-inch barrels will be available for G2 upper receivers only.

If you have any additional questions I will do my very best to answer. If I am unable to assist you directly or you require additional information regarding the SIG MPX, or any Sig Sauer products, please do not hesitate to contact Customer Service at 603-610-3000, Option 1, M - F 8:30am – 6:00pm EST
 
Posts: 198 | Registered: April 06, 2014Reply With QuoteReport This Post
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quote:
Originally posted by CRASH_PRO:
News Flash! New SilencerCo silencer, specs seem almost too good to be true, can't wait to get my hands on one! That is a similar dB rating as a full size about twice is length.

SilencerCo Omega 9K Specs:

Length: 4.7”
Weight: 7.2 oz
Diameter: 1.475”
Finish: Black Oxide
Sound Rating: 124.9 dB with 147gr Ammunition


Yeah, they blantently copied Sig's new tubeless welded baffle design for their new suppressor. Kinda sucks that this is what it's coming down too, that a company releases a new product and 3-4 months later another company rips it off and claims it as their own "new cutting edge technology"...
 
Posts: 57 | Registered: June 08, 2015Reply With QuoteReport This Post
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I the dB rating for the MP5 only? As of right now you can only get it with the MP5 package.
 
Posts: 198 | Registered: April 06, 2014Reply With QuoteReport This Post
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quote:
Originally posted by Elec540:
I the dB rating for the MP5 only? As of right now you can only get it with the MP5 package.


Yeah, the super amazingly over priced clone MP5. That combo package is a freaking joke.
 
Posts: 57 | Registered: June 08, 2015Reply With QuoteReport This Post
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Collector's pricing, matching serial numbers. They sold there AK combo and AR combo packages.
 
Posts: 198 | Registered: April 06, 2014Reply With QuoteReport This Post
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Picture of Ferrari Steve
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quote:
Originally posted by Elec540:
Sig Sauer In reference to Magazines:

Although there have been some demonstrated levels of functionality when using magazines and uppers of different generations, we recommend using like generation components for optimal reliability.

*Will I still be able to purchase Gen1 9mm Magazines?
Yes, it is Sig Sauer’s intention to provide support to MPX G1 customers for all components of the firearm. Magazines in other calibers will only be available as G2 magazines.

In reference to barrels/caliber X-change:

All customers will be able to take full advantage of the MPX Caliber-X-Change Kits. If you are an MPX G1 owner, Sig Sauer will offer you the opportunity to purchase a complete MPX G2 Upper Receiver in the caliber of your choice, other than 9mm, at a reduced cost that will be the equivalent retail cost of the corresponding MPX Caliber X-Change Kit. This is limited to one purchase per MPX serial number.

The Barrels from Gen1 and Gen2 MPX are different enough to not permit compatibility. However, with the purchase of your first “Caliber-X-Change kit you will receive a full Gen2 upper. If you wish to purchase other/future caliber kits they will fit the Gen2 upper only (as specified by product description). The Gen1 will remain 9mm. MPX Gen1 Cal-X Kits are being created in 9mm only. This allows the customer to purchase G1 barrel assemblies in 4.5-inch, 6.5-inch and 8-inch variations. 16-inch barrels will be available for G2 upper receivers only.

If you have any additional questions I will do my very best to answer. If I am unable to assist you directly or you require additional information regarding the SIG MPX, or any Sig Sauer products, please do not hesitate to contact Customer Service at 603-610-3000, Option 1, M - F 8:30am – 6:00pm EST


This sounds good... but with everything that's happened so far, I'm going to pretend I live in Missouri.

You know, because it's the "show me" state. Smile


RealGunReviews.com | Gun Videos | SIG Fans Facebook Group | NRA Benefactor Life Member
 
Posts: 291 | Location: Seattle, WA | Registered: December 26, 2014Reply With QuoteReport This Post
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quote:
Originally posted by CRASH_PRO:
quote:
Originally posted by ctsheepdog:
quote:
Originally posted by Engineer:
I asked Liberty about 9mm performance and their response was:

"It is about 5 dB louder on 9mm. We are running in the lower 130s with it in 9mm on the host weapons we have here. The Mystic X runs in the upper 120's with the same weapon platforms."

I did not ask about backpressure but I assume it will be lower with the larger aperture and the monocore looks a lot less restrictive that the Mystic cores.

Thanks Eng. This is going to be tough to gauge until someone does a head-to-head, but it sounds like it will be a compromise between optimal muzzle sound and blowback.


It will most definitely have less back pressure, over bored and the baffle stack has a lot of space between baffles. I bet the FRP is insane. That's one area the Mystic X always suffered, but the same can be said for the Osprey.


the FRP on my 8" MPX with my osprey45 is negligible.
 
Posts: 169 | Location: Pittsburgh, PA | Registered: November 07, 2013Reply With QuoteReport This Post
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One way or another they have to follow through, and offer what they advertised. They had terrible timing when they brought out the new version. Should off held off till backorders got filled and innovatory caught up. The Trust level might have been little higher. Wait and See
 
Posts: 198 | Registered: April 06, 2014Reply With QuoteReport This Post
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On to triggers and a better aftermarket replacement...

SIG Customer Service (naturally) advises against this in the MPX. Having visited the SIG Pro Shop at the Academy in Exeter, they actually sell the Geissele line of triggers for other platforms. So it piqued my curiosity if they would recommend this product for the MPX too. They said NO! The 9mm MPX bolt carrier cycles too fast and hard, therby causing premature trigger pack failures in all of the aftermarket products they have tested to date. The MPX stock trigger has a beefier section to sustain the higher velocity forces.

Damn.

This message has been edited. Last edited by: armedjetflyer,
 
Posts: 75 | Location: USA | Registered: October 23, 2011Reply With QuoteReport This Post
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I've been thinking about asking Santa for an MPX Deployment bag, but the 5.11 Tactical Covert bags look just as good, and I have very good experience with their products (mostly clothing).

Anyone happen to know the internal dimensions of the MPX Deployment bag? Sig's website doesn't have any measurement info. Though I doubt it would fit the MPX with a suppressor attached.

With a SilencerCo Osprey 9 attached and telescoping stock closed, my MPX comes in at just under 27" total length.

For less $$$ than the Sig-specific bag, I could pick up this 5.11 COVRT M4 Shorty that handles up to 28.5" high inside:

http://amzn.to/1jxAgbJ

Anyone else carrying their MPX in something neat?


RealGunReviews.com | Gun Videos | SIG Fans Facebook Group | NRA Benefactor Life Member
 
Posts: 291 | Location: Seattle, WA | Registered: December 26, 2014Reply With QuoteReport This Post
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quote:
Originally posted by armedjetflyer:
On to triggers and a better aftermarket replacement...

SIG Customer Service (naturally) advises against this in the MPX. Having visited the SIG Pro Shop at the Academy in Exeter, they actually sell the Giessele line of triggers for other platforms. So it piqued my curiosity if they would recommend this product for the MPX too. They said NO! The 9mm MPX bolt carrier cycles too fast and hard, therby causing premature trigger pack failures in all of the aftermarket products they have tested to date. The MPX stock trigger has a beefier section to sustain the higher velocity forces.

Damn.
I'd like to see the failed Geissele trigger pack Sig tested.

Five months ago, Bill Geissele posted a comment on my article regarding MPX triggers (apologies in advance to anyone who thinks linking to ones own blog post is spammy):

http://www.stevejenkins.com/bl...-void-your-warranty/

Bill said "HK guns also have the bridge. High impulse guns will toss the hammer back violently so that the hammer will hit the disconnector. By repeatedly striking the disconnector it will actually fracture over time. As a trigger similar to the Sig the ALG trigger may have this problem. However, the Geissele triggers are designed so that the bridge is not needed and the hi velocity of the bolt carrier will not effect it. And even if there was a problem Geissele's golden warrenty is always there to help you out."

I've spoken to Bill since then and he stands by what he said five months ago.

I'm still running a Geissele SSA in my MPX and loving it. In fact, I picked up another SSA and an SSA-E on Black Friday.


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Posts: 291 | Location: Seattle, WA | Registered: December 26, 2014Reply With QuoteReport This Post
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And now for a TOTAL subject change...

Sig lists the overall length of the MPX with telescoping stock closed as 18.1" and barrel length as 6.5".

http://www.sigsauer.com/Catalo...Details/sig-mpx.aspx

As I'm sure others did, I relied on this info when I sent in my Form 1, well before the telescoping stocks were shipping.

My tape measure agrees with the barrel measurement, but with the stock flash hider removed, my tape measure claims that the overall length of an MPX with the telecoping stock closed as closer to 19.75".

I'd guess I'm not the only one with 18.1" on my MPX SBR Form 1. Is that worth attempting to amend?

Or is it not that big a deal, especially since the length on the form is shorter than what I measured as the actual length of the firearm?


RealGunReviews.com | Gun Videos | SIG Fans Facebook Group | NRA Benefactor Life Member
 
Posts: 291 | Location: Seattle, WA | Registered: December 26, 2014Reply With QuoteReport This Post
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The Sig Sauer deployment bag will only work if you have the folding stock on the 8" version or telescoping stock with the shorter barrel lengths. I know this because I tried it.
 
Posts: 160 | Location: WA State | Registered: December 07, 2006Reply With QuoteReport This Post
Thank you
Very little
Picture of HRK
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Picked up a MPX tonight




"My rule of life prescribed as an absolutely sacred rite smoking cigars and also the drinking of alcohol before, after and if need be during all meals and in the intervals between them." Winston Churchill
 
Posts: 13172 | Location: FL | Registered: November 07, 2008Reply With QuoteReport This Post
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