Troy Defense A3 Pistol 5.56 NATO AR-15 Semi Auto Pistol 10.5" Barrel 30 Rounds M-LOK Free Float Hand Guard Matte Black

123816 Troy Industries SPSTCA310BT19

Troy Defense A3 Pistol 5.56 NATO AR-15 Semi Auto Pistol 10.5" Barrel 30 Rounds M-LOK Free Float Hand Guard Matte Black
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123816 Troy Industries SPSTCA310BT19
Model SPSTCA310BT19 
Action Semi-Automatic 
Caliber 5.56 NATO 
Capacity 30 
Barrel Length 10.5" 
Frame Finish Black 
UPC 812441028112 
SKU 123816 
Ships Ships Within 5 to 7 Business Days After 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 5 to 7 Business Days After Valid FFL is Received

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


The Troy Defense A3 Pistol was developed with today's war fighter and LE Official in mind

The AR-15 pistol has gained popularity over the last several years due to the fact that it is a more compact maneuverable package that just about anyone can shoot. Enter the Troy Defense A3 pistol, designed specifically with today's modern war fighter and law enforcement official in mind as well as the civilian sheep dog, the A3 pistol can get it done. This AR-15 pistol is built to exceed military specifications utilizing the standard direct gas impingement system with a 10.5" barrel that sports a 1:7" twist rate. The included hand guard is the Troy M-LOK BattleRifle Free Float rail which measures 9.25". In order to maintain NFA compliance and categorization as a pistol the included receiver extension is a pistol buffer tube which does not allow the installation of the stock.

Troy Defense A3 Pistol (Matte Black) Specifications and Features:

  • Troy SPST-CA3-10BT-19
  • Direct Gas Impingement System
  • AR-15 Semi Automatic Pistol
  • 5.56 NATO (accepts .223 Remington and 5.56 NATO)
  • 10.5" Barrel
  • 1:7" Right Hand Twist Rate
  • Forged Aluminum Upper/Lower Receiver
  • Flat Top Upper
  • Troy M-LOK BattleRail Free Float (9.25" Length)
  • Troy Standard Safety Selector
  • Troy Standard Trigger
  • Troy Flat Trigger Guard
  • Troy A2 Control Grip Pistol Grip)
  • 30 Rounds
  • Troy 30 Round BattleMag (Standard pattern AR-15 Magazine)
  • A2 Flash Hider
  • Pistol Buffer Tube/Receiver Extension
  • Overall Weight 4.2lbs
  • Hard Coat Anodized Finish
  • Matte 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.