Maxim Defense Industries · Personal-Defense-Weapon · In Production · 2023
| Weight (empty) | 3345 g (118.0 oz) |
| Overall Length | 657.9 mm (25.90") |
| Barrel Length | 139.7 mm (5.50") |
| Magazine Capacity | 30 rounds |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Rotating Bolt |
| Muzzle Velocity | 625 m/s (2051 fps) |
| Muzzle Energy | 1585 J (1169 ft·lbf) |
| Effective Range | 200 m (219 yd) |
| Frame Material | Aluminum |
Primary Caliber: .300 AAC Blackout
The Maxim Defense SDX:505 is the most compact member of the SDX series of integrally suppressed firearms, combining a 5.5-inch barrel with an integrated DSX-D suppressor built on MonoKore technology. SOCOM-tested across multiple calibers, the system reduces sound signature and recoil while improving accuracy, and rides on a Gen 7 CQB stock with HK-height rail and M-slot handguard. It is chambered in .300 BLK, 5.56 NATO or 7.62x39 and built from 6Al-4V titanium and 17-4 stainless steel.
Country of Origin: United States