Angstadt Arms UDP-300 AR-15 .300 AAC Blackout Semi Auto Rifle

7-GAAUDP30R0R Angstadt Arms AAUDP30R0R

Angstadt Arms UDP-300 AR-15 .300 AAC Blackout Semi Auto Rifle
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7-GAAUDP30R0R Angstadt Arms AAUDP30R0R
Model AAUDP30R0R 
Action Semi-Automatic 
Stock Collapsible 
Caliber 300 AAC Blackout 
Capacity 30 
Barrel Length 16" 
Frame Finish Black 
UPC 850035894088 
Ships Ships within 2 to 3 business days after a valid FFL is received 
  • All firearm sales are final. NO RETURNS.
  • Return to manufacturer for warranty service.
  • Actual buyer must pickup from FFL dealer who will conduct the background check. Learn more
  • Firearm transfer must be the actual transferee/buyer. Click here to see BATFE form "Transaction Record Part 1".
  • Firearms are only available for purchase online.
Ships within 2 to 3 business days after a valid FFL is received

A $16.95 handling fee will be charged per order. No additional charge for multiple firearms on an order.


Angstadt Arms Designs Innovative Weapon Platforms for Military, Law Enforcement and Responsible Citizens

Angstadt Arms is excited to offer a new AR-15 rifle now chambered in the popular .300 AAC Blackout cartridge. This particular model features a 16" barrel with a 1:7" twist rate and a barrel threaded 5/8x24. This important fact may be important should you decided to suppress this platform, however it does come standard with an A2 style flash hider. Additionally this rifle is made from a pair of billet receivers and it is worth noting that the upper does NOT include a forward assist or dust cover. The aluminum free float handguard provides you ample acreage for all your favorite weapon mounted accessories. With M-LOK and picatinny you have everything you need to customize the rifle the way you see fit. Make sure you give this Angstadt Arms AR-15 a good home and it will treat you right for years to come.

Angstadt Arms UDP-300 AR-15 Semi-Automatic Rifle (Black) Specifications and Features:

  • Angstadt Arms AAUDP30R0R
  • Direct Gas Impingement Semi Automatic Rifle
  • .300 AAC Blackout
  • 16" Barrel
  • 1:7" Twist Rate
  • Barrel Threaded 5/8x24
  • A2 Flash Hider
  • 7075-T6 Billet Aluminum Slick Side Upper Receiver
  • No Forward Assist, No Dust Cover
  • 7075-76 Billet Aluminum Lower Receiver
  • Black Nitride Bolt Carrier Group
  • Low Profile Gas Block
  • Aluminum Free Float M-LOK Hand Guard
  • Standard Trigger
  • Carbine Stock
  • Polymer Pistol Grip
  • Accepts Standard Pattern AR-15 Magazines
  • 30 Rounds
  • Overall Weight 6lbs
  • Overall Length 32" Collapsed
  • Black
Buying a Firearm Online is Easy!
  • Add your selected firearm(s) to your shopping cart and check out.
  • Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Find a FFL Dealer HERE.
  • If you choose an FFL Dealer that is not on our preferred list, you or your FFL Dealer will be required to fax or email us a signed copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. Download the Firearm Sales Form
  • Pick up your firearm from the FFL Dealer, who will need to do a criminal and mental health background check. Transfer fees may apply.
Buying Firearms on the Internet

Federal law requires firearms to be shipped to FFL Dealers. For an individual to receive a firearm from Cheaper Than Dirt! it must be shipped to an FFL Dealer in your state.

Locating a Federal-Firearm License Dealer (FFL) in Your Area

There are thousands of FFL Dealers in the United States. You may choose an FFL Dealer from our preferred listing or you may find a dealer in your area. To find a list of FFL Dealers in your area area CLICK HERE. If you choose a dealer that is not on our preferred list, either you or the FFL Dealer will be required to submit a copy of the Federal Firearms License referencing your Cheaper Than Dirt! order number. The FFL Dealer will usually charge a fee to conduct the transfer. There are duties that the FFL Dealer is required to do during the process which include a criminal and mental health background check through NICS. Remember, the FFL Dealer is doing you a favor and the process takes time to complete. Fees can vary so check with the FFL Dealer ahead of time to request a quote on the fees associated with your firearm transfer. The FFL Dealer is in business to make a profit and your internet purchase may be viewed as competition to their retail business. If you feel the fees are too high, you can search for another FFL Dealer.

Completing the Transaction

Once you place the firearm in your cart and checkout you will receive a confirmation email that has your order number and further instructions. We will verify the FFL license and also make the FFL Dealer aware that an order from Cheaper Than Dirt! will soon be arriving for you. Most orders are processed within 2-3 business days from the time we receive and verify the FFL Dealers information. Once shipped, your firearm will arrive at the FFL Dealer within 3-7 days business days. The FFL Dealer will begin processing the shipment. It may be an additional day or so before the FFL Dealer is ready to conduct the transfer of the firearm to you. Call the FFL Dealer and set an appointment to confirm that the firearm is ready to be transferred.

Please note! All Firearm Sales are Final

It is important to thoroughly inspect your firearm before completion of the transfer. Once the firearm is transferred into your name, Cheaper Than Dirt! will not accept a return or exchange under any circumstance. If a defect is discovered after completing the transfer, you must contact the manufacturer directly for repair or replacement.