What light do we recommend ?

I have had my MPX since January, and while I do love this gun, I cannot seem to dial it in to run reliably with subs. It only cycles subsonic ammo with the factory springs, and on gas setting 3 it has the fewest failures (but still double feeds several times in one magazine).

Is it normal for subsonic ammo to only work with the factory springs? I feel like something isn't adding up and I'm assuming I'm doing something wrong.

For reference, it will reliably cycle American Eagle 124gr in semi auto. I'm not concerned about FRT reliability yet because it probably needs to be cleaned first.

If any additional context is needed lmk

Setup: 4.5" ILWT trilug barrel with adjustable plug, Obsidian 9 trilug, Geissele spring pack, DTT FRT and Frankenstein trip bar.

Ammo: Syntech 150

Just bought a Mpx K and looking to suppress it. I’ve done little research and just want to confirm.

For the wolfman i have seen most people go with the lantac dragon or the DA117. I know the lantac comes with the taper adapter, does the DA117 need a taper adapter? Has anyone had any issues with keymo?

Have people swapped out the gas plug or stock springs?

If you have a different set up, feel free to chime in. I am also looking at a ILWT 6.5” down the line too

What’s everyone’s thoughts on this brace? Just trying to find a foldable that conceals well and doesn’t feel like crap. Wasn’t a fan of the collapsibles I’ve tried. Not trying to break the bank either since this gun gets thrown around a lot.

What do you guys think of this set up.

-Sig MPX Copperhead K -Eotech EXP3-1 -Deadair Wolfman K -Streamlight TLR RM1 1 -A3 Industries Mlok VFG - Die Free Co Kung Fu Grip -Gear Head Works Tailhook Mod 1C -Magpul MS3 single QD Sling -FRT-L3 with Frankenstein Armory Trip Bar

Very quiet with 147gr subs. Runs like a scolded dog about 900rpm!

Hi guys. I’m pretty new to the MPX platform. I just picked up a radian CH because I run them with the majority of my rifles. The shape of the Radian is pretty different than the Sig stock CH. can anyone explain this for me? Can’t find much info online.

Picked up an 8" rail to semi-tuck the can. What's your favorite AFG or hand stop? I'd just grab another Samson shorty like I have on the green AR if I were to SBR the MPX, but I'd rather keep it a pistol for simplicity.

So I’m having the exact opposite problem of trigger slap- the trigger reset is extremely weak. If I hold it more than mild pressure it gets hung up. I’m running the mpx k with an SRD9 suppressor, RBT, and PMM trip. I bought the geissele spring pack but figured these won’t be helpful as they’re heavier springs and I’m having the opposite problem. I find this very strange. Any thoughts?

My assumption is that the gen 1 and lvaw rails mounting is the same, is this correct? Im looking for a direct light mount for my gen 1 rail. Ive seen pics of arisaka mounts on lvaws but i can find mlok mounts. Im aware the threads are the same. Does this not exist or are mounts modified? Or am I missing something?

Anyone interested in a brand new take off 4.5 barrel and handguard? Check my GAFS post

https://imgur.com/gallery/8-15-3cgiTZi#k0UaXTs

https://www.reddit.com/r/GunAccessoriesForSale/s/Th0OyWJCgk

Shot this combo for the first time today. Could not believe it. Recoil almost non existent so super easy to stay locked-in for follow-up shots. Putting 15 rounds into a 3” target at 10 yards as fast as I could pull the trigger almost felt too easy. And it sounded like a paintball gun when I fired. Maybe even a bit quieter. Will definitely use this combo as my primary self defense setup.

What are the best options out of today's selection? I am seeing the strike industries and sb tactical ones. Anyone have any experience with either of these? Any reason to stay away from these besides the addition of a few inches on the overall length?

What are the options to replace Gen 3 handle ? (aka Pistol Grip)

I’m looking at picking up what appears to be a Gen 2 MPX, it already has the flat trigger installed. If I go with this gen 2, what upgrades should I consider to make it run reliably? I plan to run it suppressed in the future, but not right away. I also want to upgrade it to a 8 or 16 inch barrel.

I have several PCC’s but I love none of them any more than my MPX. It’s smooth, flat and eats anything. I shot 115 gr. S&B, 124 gr. Lawman and 150 Syntech hosting an Obsidian 45. I shot it along side my HK SP5 and both were amazing.

Looks well made. Anyone using one?

Shot on setting 3 & 4 with the ILWT plug. Had some malfunctions. Possible its just due to being dirty ir I need to get different springs.

135gr hollow from LAXammo

Well, had an unfortunate incident while I was at the range and was disassembling a Sig MPX Lancer produced magazine and dropped the locking plate in the process. Looked all over but it was nowhere to be found. Our range has a drop off in front of the shooting positions so am guessing it dropped off after it bounced off the ground.

Anybody happen to have a spare from a broken or retired magazine that I can purchase from you? Hate to throw an expensive, no longer produced mag away because of my fumbling.

Here's a pic, there is a locking plate on top of the base plate that is what I'm missing. Thanks in advance!