The Stribog Muzzle Extension (SMX) a crucial component designed to enhance safety and complement the aesthetics of your firearm. When using a KDG Stribog Receiver Extension (SRX) the SMX becomes vital. It directs the muzzle blast forward safeguarding your arms and hands during firing and manipulation. Choose between the SMX3 (3-inch extension) and SMX6 (6-inch extension) to perfectly match your SRX3 or SRX6 rail extension. The SMX threads directly onto your Stribog barrel with standard 1/228 threads ensuring a secure and straightforward installation. Constructed from mild C1018 steel the SMX can be easily welded if required for compliance with local and federal firearms laws and regulations. The knurled forend provides a slip-free grip aiding in installation removal and ensuring securement. The Stribog Muzzle Extension not only provides functional benefits but also enhances the overall look of your Stribog SP9 with its sleek and purposeful design.