The Maxim SDX 508 300BLK 8.5" SBR pairs Maxim’s compact AR-platform with the integrated DSX-D suppressor system for a refined, duty-ready short-barreled rifle. Chambered in 300 Blackout with a 8.5" threaded barrel and matching suppressor, it is engineered to significantly reduce sound signature, tame recoil, and enhance practical accuracy while maintaining a sleek, modern profile.

This semi-automatic SBR is ideal for shooters seeking a compact, suppressed platform for training, range use, and general-purpose defensive roles where allowed by law. The included 30-round magazine, polymer grip, and adjustable stock support comfortable handling and fast follow-up shots. Built around Maxim’s proven SDX architecture and suppressor technology that has been repeatedly tested to demanding standards, this rifle reflects the brand’s focus on innovation, reliability, and thoughtful design.

• Manufacturer: Maxim Defense
• Model: SDX-508
• Caliber: 300 Blackout
• Action: Semi-Automatic
• Barrel Length: 8.5"
• Number of Magazines: 1
• Capacity: 30
• Unique Features: Integrated DSX-D Suppressor, Short-Barreled Rifle Configuration
• Threaded Barrel: Yes
• What's In The Box: Rifle, Magazine, DSX-D Suppressor
• Weight: 7.8 lbs
• Length: 33.1"