Our new rail adapter makes it easy to add a sling or other rail mount attachment to your Arsenal Sam 7K & 7k-34 Pistol. Our adapter mounts to the rear of your receiver through the sling hole once the sling loop is removed. The Rear 1913 type Rail can also be removed to use the adapter and mount a flat mount stock or flat mount folder as well. This part number for the Adapter with small machined aluminum rail, threaded inner block with all the bolts and installation instructions. Adapter and rail both made of machine 6000 series aluminum.