Sling Plate QD (ESP QD): Elevating Tactical Rigidity and Ambidextrous Weapon Transitions with Precision Stainless Steel Architecture System Version:GBB Optic Specific Sight Alignment: Rapidly adjust and other gear Optic Specific Sight Alignment: Rapidly adjust cheek weld height when switching between flat red dots and magnified LPVO scopes on elevated mounts It slides effortlessly into position with zero filing or housing modification required By positioning twin heavy duty QD ports symmetrically beneath the receiver extension buffer tube and superior resistance against sweat corrosion and relentless metal on metal QD coupling friction