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The autolive battery cap is a welcome enhancement! Shake awake should have been standard feature , but of course PA autolive battery cap corrects the lack of feature
It makes a difference in heat conduction. My steel barrel nut transfers heat directly to the handguard. Titanium kmr nut does not!! I've tested this on a 12" mid gas di and a 17" mid gas di. Both have drastically reduced high temperature heat conduction. I shot 120rds rapid fire through thru both guns with both barrel nuts to get to this conclusion. Titanium kmr barrel nut drastically reduces heat conduction from receiver to handguard under heavy fire schedules!! ...and it is lighter weight