This is a stock base with Picatinny rail designed for Tokyo Marui Gas Blowback Shotgun SAIGA-12K. By attaching this product, you can transform it into a compact and easy-to-handle pistol-style configuration without a stock. When combined with our “Rail Stock Pipe Adapter Light,” M4-style stock pipes can be attached, and the “Folding Rail Stock NEO” can also be mounted. Additionally, it includes a dedicated button to disable the stock lock, preventing unexpected folding of the stock. On the left side, there is a hole for the QD sling swivel, allowing for versatile sling configurations.