Product Description The Cross Armory Stock Lock (CRSL) is a precision-engineered solution for AR-15 and M4 owners who need to comply with fixed-stock regulations in states such as California and New York. Designed for shooters who want to go featureless without purchasing an entirely new stock, the Stock Lock clamps securely onto any exposed buffer tube at any position along the tube, not just at the pin holes. This gives you the flexibility to fix your buttstock at exactly the length of pull that works best for you. Once installed, the adjustable buttstock is immovably secured to the buffer tube, fully satisfying fixed-stock legal requirements. The Stock Lock is machined from billet 7075-T6 aircraft-grade aluminum, approximately 80% stronger than 6061 aluminum, and features a durable black finish. Two Allen wrenches are included for straightforward installation and removal, requiring no disassembly of other firearm components. Product Highlights Converts Adjustable Stock to Fixed: Turns any adjustable AR-15/M4 buttstock into a compliant fixed stock to meet state regulations in CA, NY, and other restricted states without buying a new stock. Attaches Anywhere on the Buffer Tube: Unlike pin-hole-only solutions, the Stock Lock can be secured at any position along the buffer tube, so you can lock in your preferred length of pull. No Permanent Modifications: Fully reversible design means the Stock Lock can be uninstalled if you move or sell your AR-15 in a state without fixed-stock requirements, preserving the full value of your firearm. Premium 7075-T6 Aircraft Aluminum: Machined from billet aluminum alloy that is approximately 80% stronger than 6061, ensuring long-lasting durability and a lightweight profile. Easy Installation with Included Tools: Comes complete with two Allen wrenches and installs quickly without requiring disassembly of other firearm components. Specs Brand: Cross Armory MPN: CRSL UPC: 649070877282 Material: 7075-T6 Billet Aluminum Finish: Black Compatible Firearms: AR-15, M4 style rifles with exposed buffer tube Included Accessories: Two Allen wrenches Condition: New Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>