Ever see one of these?

[Belt Fed]

Kinda pricy but pretty neat idea.

https://advancedtactical.com/ar15-5-56-30rnd-polymer-w-tritium-follower-ets-group/

 

[Old_Me]

umm...nope

 

[HansGruber]

I’m just a touch too low speed, high drag for that.

But it is kinda cool.

 

[Snake45]

For some special people, that's actually a pretty cool idea.

I don't need it, so won't buy one, but I can recognize the utility.

 

[yotehtr]

Sweet!