Optimize your AR-15's compliance with restrictive state laws with the Cross Armory Stock Lock Converter. Crafted from premium 7075-T6 billet aluminum with a sleek black finish this innovative lock allows you to transform your adjustable stock into a fixed stock without any permanent modification to your firearm. Unlike other solutions the Stock Lock can be positioned anywhere along the buffer tube-not limited to pinholes-offering greater flexibility and customization. Perfect for users in CA NY or any state with strict firearm regulations this durable stock adapter includes two precision allen wrenches for easy installation ensuring your rifle remains legal while retaining its original stock. Built for AR-15-style firearms. Compliance durability and versatility in one package.