stripped screw on bolt carrier key ...

[30 cal slut]

uh, help? 1/8 inch allen screw on key is stripped.

[Robb Jensen]

Use an EZ-out screw extractor to remove it.

[BYUP]

Use an EZ-out screw extractor to remove it.

Yep, they do work well,any auto parts should be able to "fix you up"

[30 cal slut]

thanks!

[Mr.B]

I skip the extractors, usually, and just tap a slightly larger "Torx" bit into the rounded allen head. (ETA, the tapping part also sometimes helps the bolt to break free)

The six edges biting into the stripped surface usually work better for me than the four edges commonly found on most bolt extractors.
Its also easier to get the right size when you aren't dealing with a tapered bit like the extractors that are supposed to 'twist deeper' since usually Allen head bolts aren't that deep.

You may ruin the Torx bit, but since I use those for a lot of stuff (auto-mechanic by trade) I consider them disposable and keep lots of cheap sets around for this purpose.