Improve the functionality of your SBA-3 with this strong, form-fitting plug. Specially designed to fit within your SBA-3, this plug offers both structural support and a storage feature. Crafted from glass reenforced polymer, it's built for durability and long-term use, ensuring your SBA-3 retains its shape. Home-made of high-quality glass reenforced polymer in the USA! Every purchase helps a physically disabled man pay bills! (Me lol) This plug is designed for a perfect fit in the SBA-3, providing a secure and stable fit without altering the original design. Improves stability. This plug fortifies your SBA-3, preventing unwanted flexing or warping. The plug includes an integrated storage pocket, perfect for tiny essentials like optic batteries or allen wrenches/hex keys. Inserting the plug into your SBA-3 is quick and effortless, requiring no tools or modifications. The plug adds strength without significant weight, maintaining the balance of your rifle. Ideal for both professional and recreational use, this plug is a must-have upgrade for your SBA-3. It not only supports structural integrity, but also provides a convenient mini storage space for small items or tools. Optimize your SBA-3's performance and shape with this tool! *NO RETURNS! Please ensure compatability between your gear and this item before purchasing.*