Maxim Defense SDX-508 300 Blackout 8.5" SBR 30-Round with DSX-D Suppressor

The Maxim Defense SDX-508 is a semi-automatic AR-15 pattern rifle chambered in 300 Blackout and configured as a short-barreled rifle, sold as a bundle that includes the Maxim DSX-D suppressor. It is intended for suppressed shooting in the 300 Blackout cartridge, which works with both subsonic and supersonic ammunition.

The rifle has an 8.5-inch threaded barrel with a 5/8x24 muzzle thread pitch for mounting compatible muzzle devices. The overall length is 28.13 inches with the suppressor attached. It is finished in Flat Dark Earth Cerakote, uses a semi-automatic action, and feeds from a 30-round magazine. The handguard is M-LOK compatible for accessory mounting.

The package includes one rifle with its suppressor and one magazine. Because the SDX-508 is a short-barreled rifle, it is subject to NFA regulations; buyers should confirm the applicable federal and state requirements before purchase.

• Platform: AR-15
• Caliber: 300 Blackout
• Action: Semi-Auto
• Barrel Length: 8.5" (threaded)
• Muzzle Thread: 5/8x24
• Overall Length: 28.13" (with suppressor)
• Capacity: 30 Rounds
• Finish: Cerakote Flat Dark Earth