I have these, maybe not the fix for heavy gloves, but an attempt to solve the issue.
Carbine
https://www.milsurps.com/images/impo...stuff014-1.jpg
https://www.milsurps.com/images/impo...stuff015-1.jpg
Garand
https://www.milsurps.com/images/impo...stuff016-1.jpg
https://www.milsurps.com/images/impo...stuff017-1.jpg