<https://ateiguns.com/product/atei-shimsight-for-use-with-trijicon-rmrcc-or-aimpoint-acro-p-1/#product>
<http://schema.org/description>
"The ATEi Shimsight is a great option for use with the RMRcc or ACRO P-1 as it lets the user decide the placement of the rear back up sight (in front or behind the optic).&amp;nbsp; This sight is to be used only on slides milled by ATEi due to a proprietary method of milling.&amp;nbsp; &amp;nbsp;"
<https://ateiguns.com/product/atei-shimsight-for-use-with-trijicon-rmrcc-or-aimpoint-acro-p-1/>