Tac 47 Industries http://www.tac47industries.com/content-categories/cat-280_286/folding_mechanisms.html Tue, 22 May 2012 14:42:18 -0500 en Drilled and tapped for a sling mount. Includes 1 1/4" sling mount. For use with ACE receiver blocks that do not have a sling mount, like HK MP5KPDW, or MP5. http://www.tac47industries.com/content-product_info/product_id-2169/folding_stock_mechanism_smg.html http://www.tac47industries.com/images/products/FSMSMG.jpg http://www.tac47industries.com/content-product_info/product_id-2169/folding_stock_mechanism_smg.html Folding Mechanism with integrated AR15 type Stock interface. Now any AR type stock can be mounted on any receiver block that ACE makes. That includes AR15, AR stubby stocks, ACE ARFX-E, M.P. PRS, etc. http://www.tac47industries.com/content-product_info/product_id-2145/folding_mechanism_with_integrated_ar15_stock_interface.html http://www.tac47industries.com/images/products/Folding Mechanism with integrated AR15 Stock Interface.jpg http://www.tac47industries.com/content-product_info/product_id-2145/folding_mechanism_with_integrated_ar15_stock_interface.html