DEZ-300-12.5P - SBR [12.5"] [300 AAC Blackout]


The DEZ Tactical Arms 300 Blackout SBR is a noticeable upgrade from the 5.56 in terms of knockdown power and adaptability. With the exception of the barrel, the 300 Blackout uses all of the same core components as the 5.56 caliber such as magazines and other accessories. One notable feature of our 300 Blackout SBR is that it is suppressor ready, with a standard 5/8”-24 threaded muzzle. This rifle is capable of shooting both subsonic and supersonic ammunition made possible by several parts, one being our adjustable gas block. Two models in this configuration are available, which come standard with our KeyMod Free Floating Rail System and Fluted 1:8 Twist Barrel. Experience the 300 Blackout caliber as it is meant to be with the DEZ-300-9.5P and 12.5P rifles.

The 300 AAC Blackout provides a larger variety of applications for the AR-15 rifle platform. The larger bullet increases your knockdown power over that of the 5.56 and 7.62x39.

Also available in a pistol configuration.

What's Included - Materials & Specs:

  • Upper Receiver: Mil-Spec A4 Forged 7075-T6 Aluminum with M4 Grooved Feed Ramps and Charging Handle.
  • Bolt Carrier Group: Nitride Coated, Mil-Spec+ with Properly Staked Gas Key. MPI Tested. Auto-Carrier.
  • Gas System: Adjustable Low Profile with Pistol Length Gas Tube.
  • Forearm: DEZ Arms KeyMod Free- Float Handguard, Carbine Length. Includes 1 5-slot Modular Rail Segment.
  • Barrel: DEZ Arms, Inc. 300 Blackout Chamber, 4150 Chrome- Moly Vanadium Steel, Phosphate Coated, 6-Groove Button Rifling, Lapped, 1:8 Right Hand Twist, M4 Feed Ramped Extension, 9.5” H-Bar Fluted Contour, 5/8”- 24 Threaded Muzzle, Pistol Gas, Match-Grade Quality.
  • Muzzle Device: 5/8”-24 A2 Flash Hider.
  • Buttstock: Mil-Spec Carbine Assembly with Magpul MOE 6-Position Stock.
  • Lower Receiver: Mil-Spec Forged 7075-T6 Aluminum with DEZ Arms, Inc. markings. Includes Mil- Spec Lower Parts Kit with Magpul Extended Trigger Guard.
  • Trigger: ALG Defense Q.M.S. (6 Lb. Pull).
  • Handgrip: Israeli Pistol Grip.
  • Magazine: 30 Rnd Magpul Pmag.
  • Case: Plano Hard-Plastic Rifle Case.
  • Weight: 6 Lbs. 2 Oz. (As Pictured).


DEZ Tactical Arms, Inc. offers a lifetime warranty on all complete rifles. Our rifles are guaranteed to be free from manufacturer defect. If you think there is something wrong with your rifle, DEZ Tactical Arms will inspect, and if necessary fix or replace the product with no cost to you. This warranty doesn't cover accidental damage caused by the user, or any damage done from installation or use with other manufacturer's products. Full details can be found in our owner's manual. Proof of purchase is required for any warranty claim.

Additional Notes:

  • Law Enforcement agencies interested in this firearm should contact DEZ Tactical Arms directly for sales and transfer inquiries.
  • This is a SBR, and is considered an NFA weapon. All federal laws apply.
  • Must be shipped to licensed SOT & FFL holder. You will need to provide the FFL information of your local dealer.
DEZ-300-12.5P - SBR [12.5"] [300 AAC Blackout]
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  • Item #: DEZ-300-12.5P
  • Manufacturer: DEZ Tactical Arms
Price $1,329.00
Availability Out-of-Stock
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