$75 Primary Arms Red Dot sale
 

After confirming these are GTG with Caleb, I ordered one from Chris @ Schuyler Arms. Shipping is $7. Still came out cheaper than what Primary Arms sells them for, $89.

You can get either removable or fixed bases.

removable:

http://www.schuylerarmsco.com/produc...-cowitness-993

fixed:

http://www.schuylerarmsco.com/produc...s-riser-36-993