Gas question
Long story short, before I swapped barrels I was running G$ yellow springs (45% stronger than OEM) on my MPX-K. I swapped from that barrel to the adjustable ILWT SD barrel and couldn’t get it to run on max gas with any springs, not even OEM. I performed a deep clean with Hoppe’s #9 and lubricated the BCG before the swap.
Here’s the strange thing: even after swapping back to the OEM barrel, I’m getting less gas. I can’t run my G$ recoil springs anymore, the gun will only cycle on OEM recoil springs.
This makes me think it was an error on my part in either barrel installation or cleaning. It is also worth mentioning that I lost my barrel nut during the swap and had to purchase a replacement from Sig… though I doubt that would be the cause for undergassing.
Any insight on this? I’m well aware that it probably isn’t the barrel’s fault, especially given the issue with recoil springs persists with OEM springs. Any help is appreciated.