The Rugged Sub9™ is purpose-built to deliver superior suppression for subgun, SMG, PDW, and pistol caliber carbine platforms. Designed for full-auto durability and tuned specifically for 9mm performance, the Sub9™ combines exceptional sound reduction with a compact 6.8" footprint to keep your setup short, balanced, and impressively quiet. Its coaxial chamber design maximizes suppression efficiency, making it an ideal choice for modern subgun platforms and suppressed PCCs. Built from rugged 17-4 stainless steel and finished with high-temperature Cerakote®, the Sub9™ is engineered for long-term reliability and hard use - including belt-fed operation. With HUB-standard 1.375x24 threads and full compatibility with HK-spec 3-lug systems, it offers unmatched mounting flexibility across platforms. Backed by Rugged’s no-fine-print warranty and fast average turnaround time, the Sub9™ is a suppressor you can rely on no matter how hard you run it. Optimized for SMG, PDW, and 9mm PCC platforms Full-auto and belt-fed rated for extreme durability Exceptional suppression using coaxial chamber design Compact size: 6.8" with mount, 6.6" without HUB / Universal threads (1.375x24) for broad mount compatibility Includes Rugged Universal 3 Lug Mount with taper lock system Compatible with all HK-spec 3-lug adapters Supports pistol calibers up to 9mm, .357 Mag, .38 Special, 350 Legend, and 300 BLK subsonic 17-4 stainless steel body and baffles with anodized aluminum front cap Infinitely rebuildable receiver with strategically placed serial engraving Proudly made in the USA and backed by Rugged's no-questions-asked support Rugged Suppressors Sub9 Sub-gun Optimized w/HUB/Universal Threading Suppressor Compatible with HK Spec 3 Lugs and HUB 1.375x24 Mounts SUB9