Seems like these were around $20, but I can't find it for sale on their site. I also don't see it on DSA's site which is the only other place I thought I remembered seeing it. It's got to be the ACE one, not an AMD or original Galil grip- it's being used as a compliance part (US made).
It looks like this:
Can PayPal or send check/money order, or I can trade some small AR parts or whatever.
IM works best, my email is up and down lately.