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I just got my short handguard in trade for too long carbine HG.

Going for a little SD look.


Thats a 16" barrel with a piece of aluminum tube coverd in bike innertube slipped inside the HG:


Someone should make SD style replacement HD... there is a market
 
Posts: 20 | Location: Austin, TX | Registered: January 23, 2016Reply With QuoteReport This Post
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Hey Cavscout - I hear you on the handguard - the 14" carbine handguard is just too long and weighs just over 14 oz. I was able to add the 8" pistol handguard with angled foregrip, QD sling socket, 2" rail adapter & Streamlight TLR-2 HL at a total weight of just 15.3 oz.
 
Posts: 50 | Registered: November 08, 2015Reply With QuoteReport This Post
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Has anyone experienced any issues with the bolt not closing fully when using the charging handle? When I insert a mag with the bolt held open and I drive it home with the bolt release button, it closes fully every time. However, when I start with the bolt closed and attempt to chamber a round by using the charging handle, the bolt doesn't fully lock closed. This happens about 50% of the time. This is on a gen2 with gen2 mags. I do reload and have only tried this on my reloads, so they may be the culprit. I also have a Geissele SSA trigger, which has performed flawlessly for 1000 rounds. The gun has operated flawlessly besides this one issue for all 1000 rounds--no jams, FTF, FTE, etc. I clean my guns religiously with a sonic cleaner and lube with CLP so I do not suspect fouling. Thanks for any help with this!
 
Posts: 15 | Registered: December 22, 2015Reply With QuoteReport This Post
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After reading all 100 pages, I have decided to pull the trigger on a MPX. I was on the fence about getting a SBR or getting a pistol and making it an SBR. I see no reason to spend the extra money on a factory SBR when I can Form 1 a pistol and probably get it approved faster. I have decided to get a Gen 1 because I am planning on getting the Xchange Kit to make it a 357 sig. I understand Sig will give me a complete gen 2 upper for the price of the Xchange kit. I do have a few questions for the guys who have been here from the beginning.


1. Is there any reason I should get a factory SBR over a pistol and Form 1?
2. Will the $25 Paper Clip work with both the Gen 1 and Gen 2 uppers?
3. Will the Gen 2 upper come with the Ambi Charging Handle or should I get one now?


Any other input is appreciated as I will be grabbing the next pistol I find that is at a good price.


Thanks!
 
Posts: 5 | Registered: February 01, 2016Reply With QuoteReport This Post
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quote:
Originally posted by TJohnson:
I have decided to get a Gen 1 because I am planning on getting the Xchange Kit to make it a 357 sig.


Gen1 uppers are no longer being produced, though they will be supported by SIG.

If you are buying a Gen1 gun it's either new-old-stock or pre-owned.
 
Posts: 17733 | Registered: August 12, 2000Reply With QuoteReport This Post
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Hey Steve, thought you would find it interesting that I had emailed Primary Arms about a Geissele 3SG trigger for my MPX and they sent me a link to your original blog that it would void the warranty. I sent them the link to Sig's recent Youtube video in which they stated it would no longer void the warranty and they were happy to hear the news.
 
Posts: 97 | Registered: November 17, 2015Reply With QuoteReport This Post
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Don't think I have seen this posted here but it looks like Lancer is producing more for the MPX (and MCX) than just mags.

TTAG first brought my attention to new handguards:
http://www.thetruthaboutguns.c...-blue-training-mags/

Images posted at TTAG:




Anyone see these at SHOT Show?

TTAG provided this link to the Lancer page, though I do not see any MPX items at that link:
http://store.lancer-systems.co...placement-handguards
 
Posts: 55 | Location: Gunshine State - Connecticut No More | Registered: February 11, 2012Reply With QuoteReport This Post
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If I get a gen 2 and want to switch callibers, what will that take. Just a barrel or more and can I do the swap in the field or will I need some special skills or tools?
 
Posts: 5 | Registered: February 01, 2016Reply With QuoteReport This Post
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quote:
Originally posted by TJohnson:
If I get a gen 2 and want to switch callibers, what will that take. Just a barrel or more and can I do the swap in the field or will I need some special skills or tools?


From what I understand you'd first purchase the caliber-x-change kit - then a caliber swap with a Gen 2 would require the removal of the two barrel screws under the handguard to replace the barrel itself (then re-zero sights/optic), swapping the the bolt, and a different magazine.
 
Posts: 190 | Location: Minnesota | Registered: January 07, 2016Reply With QuoteReport This Post
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quote:
Originally posted by chrischoi:
Pics?

quote:
Originally posted by md-dave:
Wanted to thank armedjetflyer for giving me the idea to stop waiting for Sig to come out with a 4.5" barrel kit. While I was looking for someone to laser engrave my NFA info on the MPX and MCX, I found someone in Northern VA to do it. US Tactical, http://www.ustacticalusa.com/ is in the process of cutting my barrel, and hand guard down. He did the laser engraving, inside the mag well, for $100 per gun, while I waited. The barrel cut-down, rethread, hand guard cut-down and cerakote are being done today, and I will pick up tonight. Service was awesome. I dropped it off at 10am and will have it back this evening.

I do not work for them, or have any vested interest, but when I find a good thing, I want to share.


Sorry, been traveling for work and didn't have a chance to snap a pic. I ended up throwing an HK Parts tri-lug on it, and it just barely clears the hand guard. When I get the suppressor, I will probably get a carbon fiber hand guard that covers as much of it as possible.

 
Posts: 71 | Location: NoVA | Registered: December 12, 2015Reply With QuoteReport This Post
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Local gun store just got in a box of these stocks. Now I'm wanting to get an MPX.

quote:
Originally posted by 46and2:
quote:
Originally posted by AggiePhil:
Can someone post a pic of this "Kate Moss" stock?


From the MCX thread:





GW.
 
Posts: 642 | Location: Auburn, AL | Registered: August 24, 2012Reply With QuoteReport This Post
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I thought it was recommended to not cut the barrel as the 4.5" barrel would have different ports than the 8". Could someone verify either way?

I just spoke with Tim at SIG CS and he said that the Geiselle trigger would voice the warranty because it needed the bridge. Do we have anything official on that?

Has anyone heard how much the barrels or the conversions are going to cost? With the price of the SCAR barrels, it makes me nervous to know what the price of the MCX/MPX barrels are going to cost.


___________________________________
No, it's a cardigan... but thanks for noticing
 
Posts: 4345 | Registered: July 17, 2007Reply With QuoteReport This Post
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quote:
Originally posted by argolfer:
I thought it was recommended to not cut the barrel as the 4.5" barrel would have different ports than the 8". Could someone verify either way?

I just spoke with Tim at SIG CS and he said that the Geiselle trigger would voice the warranty because it needed the bridge. Do we have anything official on that?

Has anyone heard how much the barrels or the conversions are going to cost? With the price of the SCAR barrels, it makes me nervous to know what the price of the MCX/MPX barrels are going to cost.


Check out Sig's YouTube MPX FAQ video, it specifically states that aftermarket triggers do not void the MPX warranty. However, the MPX may wear the triggers faster due to its operation.

I called in earlier this week and was told the 8" replacement MPX barrels are now available, and that the 4.5" barrels would likely be around the same price. The price given for the 8" was $327, so now I'm thinking I will just send my barrel to get cut to 4" and rethreaded to 1/2x28. I haven't heard anything so far about reliability issues with the 8" being cut down. The 16" carbine has been discussed as a barrel to not cut under a certain length.
 
Posts: 190 | Location: Minnesota | Registered: January 07, 2016Reply With QuoteReport This Post
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Benelli M4 barrels are $900. Hopefully it won't be that bad.
 
Posts: 56 | Registered: May 27, 2006Reply With QuoteReport This Post
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My 4.5" barrel that was cut down, runs flawlessly.
 
Posts: 92 | Location: NC | Registered: October 23, 2011Reply With QuoteReport This Post
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quote:
Originally posted by armedjetflyer:
My 4.5" barrel that was cut down, runs flawlessly.


Mine as well. If the 8" is available from SIG I will most likely purchase it as well, but love the 4.5 with the suppressor underneath the hand guard.
 
Posts: 97 | Registered: November 17, 2015Reply With QuoteReport This Post
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Yes, I can't wait to get my suppressor under the hand guard. I pulled my baffles out of my Octane 45 the other night to see what it would look like with the shorter barrel and can't wait.



How does it sound with the 4.5" suppressed vs the 8" suppressed? Louder or quieter? I have heard different things.

I think I will own an 8" for the MPX again, but it will be when I get the Caliber-x-change kit. The short 9mm makes sense suppressed and keeps it very compact. Love this platform, great first venture into NFA!
 
Posts: 190 | Location: Minnesota | Registered: January 07, 2016Reply With QuoteReport This Post
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How does it sound with the 4.5" suppressed vs the 8" suppressed? Louder or quieter? I have heard different things.

I think I will own an 8" for the MPX again, but it will be when I get the Caliber-x-change kit. The short 9mm makes sense suppressed and keeps it very compact. Love this platform, great first venture into NFA![/QUOTE]
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I can't tell much of a difference between the 8" and 4.5". The Octane 45 sounds a bit quieter with the 9mm endcap. I think the Osprey 45 sounds a bit quieter then the Octane, but now that I've cut it down it won't fit and it (in my opinion) doesn't look as good as the Octane. I've got a AAC Ti-Rant 9 coming so I will compare it against both the others.
 
Posts: 97 | Registered: November 17, 2015Reply With QuoteReport This Post
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Okay, good to know. I agree that the Octane 45 sounds a bit quieter with the 9mm endcap. I was originally going to get the Osprey until I fell in love with the idea of suppressor under the handguard. Then Octane 45 it was...especially with the caliber conversion. How do you run your suppressor, direct thread or 3-lug? I've got a TROSUSA 13.5x1 3-lug and Griffin 3-lug adapter that I have yet to use. Decided to wait on the Rocksett until I have the barrel cut, just been using direct thread with fixed barrel spacer so far. Will probably sell the 13.5x1 3-lug and order a 1/2x28 since it reduces length of the 3-lug and is a more standard thread.
 
Posts: 190 | Location: Minnesota | Registered: January 07, 2016Reply With QuoteReport This Post
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quote:
Originally posted by Cntrl23:
Okay, good to know. I agree that the Octane 45 sounds a bit quieter with the 9mm endcap. I was originally going to get the Osprey until I fell in love with the idea of suppressor under the handguard. Then Octane 45 it was...especially with the caliber conversion. How do you run your suppressor, direct thread or 3-lug? I've got a TROSUSA 13.5x1 3-lug and Griffin 3-lug adapter that I have yet to use. Decided to wait on the Rocksett until I have the barrel cut, just been using direct thread with fixed barrel spacer so far. Will probably sell the 13.5x1 3-lug and order a 1/2x28 since it reduces length of the 3-lug and is a more standard thread.


Currently running direct thread. I like the QD and 3 lug idea but I'm up to about 10 cans so I just direct thread everything these days.
 
Posts: 97 | Registered: November 17, 2015Reply With QuoteReport This Post
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