*BRAND NEW* CMMG AR15 Ambi-Magazine Catch.  Bag is opened but never installed. Comes with everything-  spring, ambi-mag catch, mag release button. I do have a new Strike Industries mag button in black if also interested. Include additional 2$ for SI button (not pictured). $30 shipped anywhere in the CONUS. PayPal is preferred payment. Email, IM or respond to this post if interested.