I used a new ILWT barrel and gas system today and still had the same issues i was having with my OEM barrel and gas system. I first thought it was the extra power spring in my +11 TT extension, but it was also happening in my 30 round Sig mag. I also thought it was the small gas port in my Gen 2 barrel, but i replaced it with the new barrel. I am going to try to change the hammer springs in my trigger to see if that may be the issue. Still trying to pinpoint the issue. On a side note: the ILWT/ Taccom barrel and handguard combo is great. It is quite a bit lighter than the original setup.