Taccom ULW barrel end

[mitommy]

I recently received and installed the Tacom Super Feed 26” ULW 9mm Barrel. I did install a 15” Free Float handguard. That leaves about 1” of the barrel extending past the handguard. I know the shroud is aluminum for light weight. My concern is the end taking a beating, especially during Barrel dumps. I’m looking for suggestions how to protect that end. 
 

I’m thinking something as simple like the caps that sometimes come in the ends of pipes (cut the center out of course). But a few random checks have failed to find one that fits snuggly.  Any suggestions?

[021411]

Car door edge guard? 

[Matt1911]

You've gotta be slamming into that dump barrel pretty hard to damage the shroud.