DoubleStar AR-15 Complete Pistol Upper Assembly .300 Blackout 7.5" Barrel 1:8 Twist Free Float Handguard Black ARBU240C

Item No. ARR-044-071
DoubleStar AR-15 Complete Pistol Upper Assembly .300 Blackout 7.5" Barrel 1:8 Twist Free Float Handguard Black ARBU240C
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Our Low Price $794.87
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Brand: DoubleStar
MFR #: ARBU240C
UPC: 841348104797
Item #: ARR-044-071
CAN THIS SHIP TO YOU?
Ship:
Typically ships within 5 to 7 business days when a valid FFL is received
PURCHASE DETAILS
  • 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.
A $12.99 handling fee will be charged per order. No additional charge for multiple firearms on an order.
Description
DoubleStar 7.5" .300 Blackout AR Pistol Upper Complete, Heavy Barrel, with M-4 Feed Ramps, 1x8 twist

This DoubleStar AR-15 Upper Receiver Assembly in 300 AAC Blackout is a pin-on, ready-to-shoot top end for use with any legally registered SBR or dedicated pistol AR-15 lower receiver. The Mil-Spec 7.5” 4140 steel black nitride coated barrel comes equipped with 1 in 8" twist rifling, M4 feed ramps, and a DoubleStar picatinny rail gas block. The muzzle is threaded with a 5/8"-24 pitch for easy installation of a silencer, and is topped off with an effective A2 flash hider.

The upper features a hard coat anodized A3 flat-top receiver with a DoubleStar pistol length free-floating handguard, T-Marks, forward assist, and dust cover. The The DoubleStar Upper includes a standard AR-15 semi-auto bolt carrier, properly staked gas key with MPI bolt assembly.

This 7.5" 300 Blackout upper utilizes a pistol length gas system and is compatible with most subsonic and supersonic ammunition, with or without a sound suppressor in place. However, some subsonic ammunition may not always cycle reliably under adverse conditions or in a severely fouled firearm without a sound suppressor attached to provide extra backpressure.

Features and Specifications:
Manufacturer Number: ARBU240C
Upper Receiver: A3 Flat-Top
Barrel Length: 7.5"
Barrel Contour: HBAR
Barrel Material: 4140 Steel
Muzzle Thread Pattern: 5/8"-24
Chrome Lined: No
Barrel Finish: Black Nitride
Twist Rate: 1 in 8"
Chamber: 300 AAC Blackout
M4 Feed Ramps: Yes
Muzzle Device: A2 Flash Hider
Gas System Length: Pistol
Gas Block Diameter: 0.750"
Handguard: Pistol Length, 6061-T6 Aluminum, Free Floating
Sights: None
Bolt Carrier Assembly Included: Yes
Bolt Carrier Type: Commercial
Suitable for use w/Subsonic or Supersonic loads, either Suppressed or Unsuppressed
Compatible w/standard AR-15 magazines, including Magpul Pmags (Not Included)

Please Note: An “AR-15 Pistol” upper assembly has a barrel less than 16” in length. Pistol uppers are only for use on AR-15 pistol lowers and legal Short-Barreled Rifles. Other configurations may violate Federal law. Installation of AR-15 upper assemblies with certain features including, but not limited to: flash hiders, bayonet lugs, and threaded muzzles may violate state and/or local laws.
Buying a Firearm Online is Easy!
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  • Select a local Federal Firearms Licensed (FFL) Dealer that will accept the firearm and complete the transfer. Find a FFL Dealer HERE.
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  • 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

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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

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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.