1.) Fits MPX Copperhead... Factory collapsible brace with GEAR HEAD Tail Hook attached. $185.00 (sorry, brace #1 has SOLD)... ...2.) Sig Factory FOLDING brace... 1913 interface... Fits MPX, MCX and certain other pistols with 1913 interface... $175.00... ...3.) Fits MPX Copperhead... Factory collapsible brace... $175.00... ...Located in Spring, 77388... Will ship on your dime... (TGT messaging system having issues. Please email me at pmf9946@comcast.net OR text 713 249-5807)