The Maxim Defense Industries Maxim Sdx Rflx 300blk 8.5" Ctr Blk is an integrally suppressed short-barreled rifle built on the proven SDX platform. Chambered in .300 Blackout, it uses the M-Kore reflex suppressor system that extends back over the barrel to minimize added length while delivering impressive sound reduction and excellent balance. A tuned gas system and internal suppressor extension work together to keep the rifle running smoothly and quietly with subsonic ammunition. This configuration includes a Magpul CTR stock for a stable, comfortable shoulder weld and the SDX two-piece M-LOK handguard for mounting lights, grips, or other accessories. Rated for full-auto use and measuring just 129 dB at the shooter’s ear with subsonic loads, it is well suited for range use, training, and suppressed shooting where low signature and control matter. The design reflects Maxim Defense’s focus on refined engineering and purpose-built innovation. Key Features:

• Manufacturer: Maxim Defense
• Model: Maxim SDX RFLX .300 Blackout 8.5" CTR BLK
• Caliber: .300 Blackout
• Barrel Length: 8.5" Integrally Suppressed
• Action: Semi-Automatic
• Stock: Magpul CTR
• Handguard: SDX 2-Piece M-LOK
• Sound Level: 129 dB At Shooter’s Ear With Subsonic Ammunition
• Rating: Full Auto Rated