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Middle children of history |
Man I keep seeing and hearing people say that. It's disappointing that Sig got rid of the adjustable gas valve. Every single "auto regulating" gas valve I have seen fails to do so adequately when you put a can on it. LDD any idea if Sig is going to be bringing back the adjustable gas valve on any variants of either the MPX or MCX? | |||
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E Pluribus Unum |
Paging LDD... IMO, this is an issue that should be brought to Sig's attention, as I believe that from a sales and marketing position this is going to create a HUGE problem with this platform getting off the ground in a solid way. I picked up my MPX-P a week ago yesterday, HAVE NOT FIRED IT YET, and after reading this post yesterday I looked at my MPX and ALREADY SEE SIGNS of this unacceptable wear. To date I have field stripped, separated the upper and lower, cleaned, re-lubed, reassembled and function tested. In addition to that I have MAYBE manipulated and released the bolt 15-20 times. Here's where this is going to be a problem for Sig... Once large numbers of these weapons start landing in gun shops, and the gun shop commandos start masterbating the actions, they are going to unknowingly cause damage. Customers won't buy a $1,300 gun that is scared, and more buyers are going to purchase, only to find this damage upon close inspection at home, and they will be PISSED!!! Rightly so, and I don't see the gun shops doing anything to make it right (what can they do - refund???). Finally, the gunshops will become reluctant to stock/sell these guns. Every "gun guy" out there knows that the Sig MXP platform is raw sex (can we say Kate Moss???) with interchangable barrel lengths/configurations and, ultimately, calibers. This damage is caused by anodized aluminum on anodized aluminum friction - ultimately the fairly light weight charging handle will wear thin and break, while the back of the receiver developes a gouge in it? Again, I have not even shot my MPX, and I can already see the anodizing wearing through. Who is going to be excited to spend time and money on filing forms, tax stamps and engraving on something like this???This message has been edited. Last edited by: JRC, | |||
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Member |
We have a few of these mounts in stock packages right now but the mounts are very limited at the moment as we make them in our own shop and cant keep up. Guy Titleiiarms Dilliner, PA | |||
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Administrator |
1) The MPX never had a manually-adjustable gas piston system, so if it is overgassing (the versions I shot did not have this issue) and they want to do something about it, they're going to have to come up with something new. 2) I did not see the charging handle droop issue with the early pre-production versions that I saw. I'll ask about this when I get the chance. SIG reads these threads so they are no-doubt aware of the issue. I'll see if I can get some commentary. | |||
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E Pluribus Unum |
Thank you, LDD. Please keep us appraised of Sig's response to this issue. | |||
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Middle children of history |
Sorry, I'm obviously confusing the MCX/MPX. For some reason I thought the MCX changes of replacing the adjustable gas valve had also occurred on the MPX. | |||
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Member |
Interesting that the pre production issues did not have the slop of the charging handle. Wonder what changed? In another news. The systems only slightly over gasses when unsuppressed. Just the "auto-regulating" seems to make it very over gassed when suppressed. Additionally: I had my barrel cut down to ~4" and this made a noticeable difference in the over gassed issue and did not change the reliability unsuppressed. Its still over gassed on the 4" suppressed but not as bad as the 8". I am still looking at having a brass/gas deflector that you can buy for an AR retrofitted to the MPX. (The brass always goes 1-2 position the deflector just might help when shooting left handed with that gas). Lastly: LLD, would you want a detailed strip down set of pictures of all wear parts of the MPX posted when I break the 10k round mark? My next two ranges trips in the next month will put me over that so I just figured I would ask before putting in the effort. Anyone else want to see that? | |||
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Member |
Great forum and thread, thanks. 1) Fwiw, the $165 Geissele G2S makes a world of difference, it's worth every bit. 2) What kind of cleaning interval do you guys think for the gas piston? | |||
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Member |
My MPX has maybe 200 rounds through it. I can't say exactly how many times the charging handle has been cycled, but the chips in the upper receiver are much worse than those posted. I'm a little disappointed, only in the sense that I'm a little over the top about my equipment. Outside of this issue I'm pleased with the platform so far. | |||
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Member |
Can anyone explain or post pics how to remove the piston for cleaning? | |||
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Member |
Owner's manual shows how to disassemble but doesn't mention anything on cleaning interval. | |||
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Member |
It mentions it, but no pic on how to do it. Can someone post detailed pics on how to disassemble and tool used. Thank you. | |||
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They're after my Lucky Charms! |
So a piece of velcro loop in that spot won't help much? I hope Sig sees the is and is working on it. Lord, your ocean is so very large and my divos are so very f****d-up Dirt Sailors Unite! | |||
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Member |
I thought the original charging handle was supposed to be ambi as well. The slop is very noticeable and very unnecessary. | |||
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Member |
I think that is a decent short term bandaid NRA Life Member | |||
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Member |
3) Has anyone else noticed brass shavings falling down into the trigger group area? I use factory Remington UMC ammo, so ammo quality isn't in question. Thanks for any info on these. | |||
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Member |
Yes does it in mine to. | |||
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Member |
NSWC-Crane bought 70 MPX-SD: https://www.fbo.gov/index?s=op...e8&tab=core&_cview=0 And it looks like DoD paid about $202K: https://www.usaspending.gov/Pa...=USA&k=N0016414CJN07 The contract was closed out on May 15th. Very interesting, perhaps for T&E, since no press/media release about this transaction? I wouldn't mind getting a factory MPX-SD, although Sig maybe reluctant due to the small market size for that specific configuration (think of their decision to only sell their fixed mount only suppressor to LE/GOV). | |||
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They're after my Lucky Charms! |
Not quite 3k/unit. But sure there are a lot of bells and whistles with item. Next question: Which Mk## will this be? Mk26? 27? Lord, your ocean is so very large and my divos are so very f****d-up Dirt Sailors Unite! | |||
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Member |
I am getting the same shavings in my trigger group. Using target ammo. The scaring on the upper from the charging handle is very disappointing for us guys who like to keep our equipment in top condition. I hope sig fixes the issue or someone makes a better aftermarket charging handle to take care of it. Would love a Raptor style handle on here. | |||
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