TacFire MAR133G3 Handstop Gen 3 2-Slot Black Aluminum for M-Lok Rail
http://www.tandktactical.com/shop/686294505744-tacfire-mar133g3-handstop-gen-3-2-slot-black-aluminum-for-m-lok-rail-31325
http://www.tandktactical.com/web/image/product.template/31325/image_1920?unique=950ba71
Add a handstop to your m-lok rail with this aluminum 2-slot by TacFire