you means for the MPX? Yeah i am still pissed about that .. and pissed when they had that shroud the atf didnt approve (but impact guns still took my deposit and still havent given it back). I have a Gen 1 Mpx cut down to sbr 4" with a octane can on it and it has never failed. Have a gen 2 upper i never had to get out the box.
They have great marketing though, too bad the execution of the actual product doesn't get that much attention.
virtus conversions: https://www.sigsauer.com/mcx-virtus-11-5-caliber-exchange-kit-5-56.html. They have been out of stock for years.
Sig couldn't fix the MPX in the first 37 iterations they refused to assign a "gen" number to, not sure I trust them to fix it this time
I'd disagree, the MPX in Gen 2 had lots of issues and updates. Broken firing pins and firing pin springs in early Gen 2's that required a new bolt/firing pin design, several chamber ramp iterations to improve feeding. They had to change the barrel retaining bolts from individual bolts to a 1 piece design, because people were stripping the upper receiver recessions for them (factory loctite required too much torque to break them free and rounded out the flats in the upper that held the bolts). They had to change the bolt cam pin to the new "bowtie" version because it was badly gouging uppers (to be fair some of those were probably users putting it in backwards, though I'd make the case that a bolt cam pin that can't be installed either way like basically every AR is asking for user issues). They had gas issues and had to go from a variable gas tappet to a fixed open plug. They had extractor issues, with early Gen 2's coming with an o-ring, later versions did not, people report both working well, some found extraction issues were due to the extractor spring being installed upside down. They changed the design of the recoil spring plate due to failures. They also had lots of issues with the extractors coming loose, and also cam plates.
Yeah, this is really the only thing that is holding me back from picking up a MCX. Maybe I have been spoiled by shooting LMT's for years, but the lack of spare barrels sort of puts me off the platform as the platform is marketed as this cool modular concept that can be configured in over 500 configurations, but they only have like two or three barrel options.
If you ask an MPX owner... why no, not at all, I have no idea what you are talking about, the gun is amazing, and despite it's full auto cyclic rate being 1150rpm and it beats the shit out of triggers - of course it has a the action stays closed for the entire dwell time and isn't gassy! My Gun and My Ammo and My Can is perfect!
If you’re relying on the charging handle to fix your problem, the gun wasn’t designed to run well suppressed from the start. A PWS upper is likely a better suppressor host than most of the current sig lineup.
I had a PWS upper and sold it after acquiring the Virtus as it was worse in nearly every way, about as heavy and blowback between the two was a negligible difference. Compared to a similar length Geissele upper, the PWS was heavier, either over gassed or wouldn't reliably cycle depending on gas setting (tried several buffers), less accurate and really performed no different gas BB wise.
Sounds like you had a defective gas block or something. The PWS can switch between unsuppressed and suppressed settings. Something No AR can do aside from a switch block or adjustable gas block which wears down over time. My PWS is more accurate than my centurion arms and BCM barrels. Gas BB on the PWS is much less than a DI gun aside from possibly a extreme reduced gas port which won’t run unsuppressed so no merit in even comparing them really.
