The PT-1 is a telescopic stock that is installed in place of the standard model on left-side folding AK variants similar to the AK 103, 104, 105, 74M and PP "Vityaz".Includes more ergonomic adjustment controls and height-adjustable cheek-rest. The stock is able to fold and lock to the left (like the standard model) at any adjusted lenght and cheek-rest setting. Allows access to standard sights even with cheek-rest installed. Is able to fold with B-33 or standard dust cover installed. Compatible with the same adapters as PT-1, axcept for the AKM-style (fixed stock) adapter.