The Kinetic Development Group Stribog Muzzle Extension SMX6 (KDG part no. STR5-006) is a crucial component designed to enhance safety and complement the aesthetics of a Stribog SP9 build. When using a KDG Stribog Receiver Extension (SRX), the SMX becomes vital, directing muzzle blast forward and safeguarding your arms and hands during firing and manipulation. This 6-inch extension is sized to match KDG’s longer SRX6 rail extension, and it threads directly onto the Stribog barrel using standard 1/2×28 threads for a secure, straightforward installation. Constructed from mild C1018 steel, the SMX can be welded if required for compliance with local and federal firearms laws, and a knurled forend provides a slip-free grip during installation and removal.

Key Specifications

• Sized as a 6-inch muzzle extension, matched to the KDG SRX6 rail extension.
• Threads directly onto the barrel using standard 1/2×28 threads.
• Built from mild C1018 steel.
• Features a knurled forend for a slip-free grip.
• Finished in black.

Frequently Asked Questions

How is the SMX6 different from the SMX3? The SMX6 is a longer 6-inch extension matched to the SRX6 rail extension, versus the 3-inch SMX3 for the SRX3.

What thread pattern does it use? Standard 1/2×28 threads for direct installation on the Stribog barrel.

Buy the KDG SMX6 Muzzle Extension for Stribog SP9

Complete your SRX6-equipped Stribog build with a matched muzzle extension. Order the KDG SMX6 from our rifle parts lineup at Kinetic Development Group and finish your setup. Order it from our Lubbock, Texas gun shop for fast, direct shipping.