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  1. #1
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    MPX vs MP5

    Now that the MPX has been out for several years,it was touted to be the replacement to
    the MP5 WITHOUT QUESTION. Do you think that the MPX lived up to its expectations or
    does the MP5 still reign superior. Discuss

  2. #2
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    Pappabear has both. The MPX was a little finicky in the beginning with some loads, but has since settled in.

    I would take the MPX all day long due to ergo and bolt lock back. I simply can't get used to the lack of bolt catch on the German gun. Too many years running the M4.

    The MPX "fits" like a glove.
    "You people have too much time on your hands." - scottryan

  3. #3
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    Regarding the MP5:

    The MP5 makes a very nice suppressor host. The back end of the receiver is pretty well sealed, so there's no path for gas to get from the chamber, through the receiver, and to your face. It's very soft shooting. Much softer than blowback 9mm guns and 5.56. It's also pretty cool to hold a real one in your hands if you grew up in the 80's/90's, since it was featured in a lot of popular media from that era.

    The MP5 has some flaws. There's no bolt catch. The safety can be difficult to manipulate. You have to practice a lot just to make mag changes as fast an an AK (i.e. they're slow). The extractor spring is vulnerable to damage if a malfunction results in a round bending the extractor out away from the bolt with any force, resulting in sporadic failures to extract which a new user may not know is linked to a borked extractor spring. Just removing the extractor and extractor spring can bend and weaken the extractor spring leading to the same FTE problem. Finally, failures to eject, as from weak ammunition, can result in a malfunction where spent cases become lodged sideways in the trunnion, requiring minutes of prying with a tool to extract.

    MAD makes an upgraded MP5 bolt head that has a completely different extractor/extractor spring design that eliminates the extractor spring damage issue and may generally improve extraction, but it's $300 when you can find one.

    I've found that the "Navy Style" SEF trigger housing with the non finger groove grip offers better reach for your thumb to move the safety than either the true "Navy" housing with the different ambi thumb selectors or the traditional SEF housing with the finger grooves on the grip.

    Regarding the MPX:

    For controls, modularity like changing barrel lengths, and long-term maintenance, the MPX definitely has the MP5 beat. Sig's engineers make good designs.

    Sig USA however has a long-time bad reputation when it comes to quality control. Something Cohen brought to the company was cutting corners in production to save on costs. When you get a good example of a Sig gun, you're golden. If you don't, you can have a lot of grief fighting Sig to try and get them to make it right via a warranty claim.

  4. #4
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    Good reply.

    And as you mentioned on suppressors... We ran the TiRant (I think) on both guns, and both were excellent.
    "You people have too much time on your hands." - scottryan

  5. #5
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    I have a gen 2 mpx, mp5k, mp5n, and mp5sd.

    My sig has been very good overall although people have had a bunch of QC issues with sig. Stock trigger was crap but you now have aftermarket, same with the charging handle.

    When it comes to suppressing the mpx is more picky with ammo if you don't want to get a bunch of gas in the face, mine has run everything though. The mpx also has more modern controls which is good and is a very soft shooting gun compared to most of the blowback guns on the market. You have a locking bolt as well which should help prevent out of battery firing that some other guns can have issues with.

    The mp5 still holds up very well today despite some of the outdated controls. I find myself shooting the mp5s more although I have an autosear for them so I don't know if I'm the one to give a fair comparison though.

  6. #6
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    Oh yeah, that's another thing about Sigs: Sig somehow managed to take a stock AR15 trigger, already not the best, and make it worse. The worst trigger I've ever dealt with came on my 5.56 MCX pistol. I have no idea what combination of lower receiver and FCG tolerance stacking led to it but sometimes the trigger would break with about 5-6 lbs pressure, sometimes it would click and hit what felt like a second stage and then require 10+ lbs pull. I've never had a trigger cause me issues with accurate shooting- until that one. The 12 lb ARX100 trigger was worlds better. At least it was consistent and broke cleanly without stacking.

    My MKE MP5 has a pretty nice stock trigger.

    Assuming 9mm doesn't get blown up in price, if I ever own full auto it'll be an HK trigger pack just so I can run an MP5 in auto. The MP5 is really sweet on auto.
    Last edited by Aries144; 07-07-19 at 14:24.

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    I have high hopes for the new LWRC offering, hopefully it's got the secret sauce from the MP5.

    It might be the gun the UMP should have been.

  8. #8
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    The mpx has great potential, but it’s Sig so skip the recall and go with B&T.
    I paint spaceship parts.

    Quote Originally Posted by Failure2Stop View Post
    Stippled Glocks are like used underwear; previous owner makes all the difference in value.

  9. #9
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    Quote Originally Posted by VIP3R 237 View Post
    The mpx has great potential, but it’s Sig so skip the recall and go with B&T.
    Honestly, the B&T is the only PCC that I have any actual interest in that has come out recently. Everything I thought I was gonna like such as the Scorpion Evo just didn't really do it for me. Nothing wrong with them really, but I knew I'd never actually shoot it. I think that last 9mm PCC platform I bought was the B&T TP9.

    I shoot my old school Uzi just because I have a real one and it's like breaking out the M1 garand. But mostly I shoot one of my MP5 derivatives and my TP9 from time to time. Given that the APC Pro takes the same magazines I could see actually shooting that one when I finally grab one.

    Can't remember the last time I shot my Colt 6450, it's been awhile. One day when I finally get a Gustav M45 (Swedish K) I'll probably put a lot of trigger time on that one just because I've wanted one forever.
    It's hard to be a ACLU hating, philosophically Libertarian, socially liberal, fiscally conservative, scientifically grounded, agnostic, porn admiring gun owner who believes in self determination.

    Chuck, we miss ya man.

    كافر

  10. #10
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    I'd take the MP5, it is better built and sturdier. I feel like a bolt catch on the MP5 would close the gap in terms of reload speed as many bring up that point when comparing the MP5 and MPX.

    The MPX is a 6061 extrusion and I hate extruded 6061 receivers lol.
    Alex, Owner of Saber Solutions LLC - sabersolutionsllc.net

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