Just released- https://goaxil.com/collections/ear-buds/products/xcor
I use OTTO Noizebarriers, which have worked very well for me, and these seem to be a similar price, but with BT function added, and they seem to tick the boxes occupied by Axil's twice as expensive GS Digital buds. Will be interested to see if anyone has early reports.
Bud type earpro with the correct tips has its place, but not indoors and not around open guns, without doubling up. I run my Sordins over my OTTOS in those circumstances, but outdoors, at typical non-comped pistol SPL's, the OTTOS work well, and these have a similar NRR rating.