Maxim Defense SDX:508
Maxim Defense Industries · Personal Defense Weapon · In Production · 2022
Overview
The Maxim Defense SDX:508 is an integrally suppressed AR-platform firearm pairing an 8.5-inch barrel with the integrated DSX-D suppressor and MonoKore technology, billed by Maxim as one of the most robust suppressor systems in its category. SOCOM-tested across calibers, it reduces report and recoil while increasing accuracy, riding on a Gen 7 CQB stock with HK-height rail and M-slot handguard. Chambered in 5.56 NATO, .300 BLK or 7.62x39 and built from titanium and stainless steel.
Specifications
| Weight (empty) | 3345 g (118.0 oz) |
| Overall Length | 714.4 mm (28.13") |
| Barrel Length | 215.9 mm (8.50") |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Rotating Bolt |
| Trigger Type | Single Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 940 m/s (3084 fps) |
| Muzzle Energy | 1767 J (1303 ft·lbf) |
| Effective Range | 300 m (328 yd) |
| Barrel Rifling | Right Hand |
| Frame Material | Aluminum |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Dlc Type Iii Anodized |
Calibers
- 5.56x45mm NATO · primary · SS109/M855 — also known as 5.56 NATO, .223 Rem
- .300 AAC Blackout — also known as 300 BLK, 7.62x35mm
- 7.62x39mm — also known as 7.62 Soviet, 7.62x39
Features
- Firing modes: Semi Automatic
- Feed systems: Stanag Detachable Box Magazine
- Safety mechanisms: Manual Thumb Safety
- Features: Integral Dsx D Suppressor, Monokore Suppressor Technology, Gen7 Cqb Stock, Hk Height Rail, M Slot Handguard, Ambidextrous Controls, Ar15 Magazine Compatible, Hearing Safe, Titanium Components
Base model
Production
Production years: 2022-present
Origin
Country of origin: United States
Notes
MSRP $3,695. DSX-D integral suppressor is duty-rated. 4-6 week build to order.