Maxim Defense has announced a new lineup of firearms, including the SDX RFLX Pistol and SBR, designed for ultimate suppression. With an over-the-barrel style suppressor and the already precision manufacturing processes that Maxim Defense brings to the table, the SDX RFLX is both stout and silent.
Maxim Defense SDX RFLX – Pistol and SBR
The Maxim Defense SDX RFLX pistols (MSRP $3,695) and SBRs (MSRP $3,695) are chambered in 300 BLK with equivalent barrel lengths of 8.5”. You have colorway options of Arid and Black with your choice of either an SBA5 or Gen6 CQB pistol brace (for the pistols), or a Magpul CTR or Gen7 CQB stock (for the SBRs).
SDX508 Platform
- Cartridge: 300 BLK
- Barrel Length: 8.5″
- Collapsed Length (SBR): CQB – 32.25″ | CTR – 32.25″
- Collapsed Length (Pistol): CQB – 30.125″ | SBA5 – 32″
- Extended Length (SBR): CQB – 35.75″ | CTR – 34.75″
- Extended Length (Pistol): CQB – 34″ | SBA5 – 35.5″
- Weight (SBR): CQB – 8 Lb 0.3 Oz | CTR – 7 Lb 13 Oz
- Weight (Pistol): CQB – 8 Lb 0.5 Oz | SBA5 – 7 Lb 13 Oz
- Trigger: ALG Combat
- Stock Options: Maxim Defense GEN:7 CQB or Magpul CTR Stock
- Brace Options: Maxim Defense GEN:6 CQB or SBA5 Pistol Brace
- Finish: Type III Hard Coat Anodize
RFLX Suppressor
- Overall Length: 10.1″
- Back Over Barrel Length: 3.09″
- Length Added to Muzzle: 6.9″
- Outer Diameter: 1.75″
- Materials: Titanium, 17-4SS
- Finish: DLC (Diamond-like Coating), Cerakote
- DB at Left Ear: Subsonic: 129 dB | Supersonic: 134 dB
- Firing Schedule: Full Auto Rated
A Word from Maxim Defense on their SDX RFLX
A next-generation suppressed platform engineered from the inside out, the SDX RFLX Series is built as a complete integrally suppressed system—not just a rifle with a can. Each RFLX model combines our SDX rifle architecture with the over-the-barrel M-Kore™ reflex suppressor, creating a seamless, tuned solution that delivers exceptional sound reduction, smooth cycling, and remarkable balance. Designed to minimize blowback and reduce system wear, the SDX RFLX is more than quiet—it’s refined. From pistol to SBR, each variant is precisely optimized for its configuration, resulting in suppressed performance that’s cleaner, quieter, and more compact than anything else in its class.
Final Thoughts
The new SDX RFLX from Maxim Defense combines everything they do well: suppression and insanely compact weapon systems. The SDX RFLX continues down that path for Maxim. As always, let us know all of your thoughts in the Comments below! We always appreciate your feedback and engagement.
