Outer barrel/delta ring shims?

[grey]

Does anyone know where I can get hold of a pack of these? Google's not been very helpful and it doesn't help that I don't know if there's a specific name for them

They're the large-ish, very thin metal rings that go around the outer barrel inbetween the barrel stub and the delta ring.
I need a few to fit my free-float m4 handguard because it won't align to the receiver properly

Cheers,
Grey

[jfox61]

Re: Outer barrel/delta ring shims?

king Arms does these. so hunt out any retailer that deals in King arms stock.