7.5″ 300 AAC Blackout Pistol Complete Kit with 80% Lower

Original price was: $449.00.Current price is: $425.95.

7.5″ .300 Blackout AR-15 pistol kit in Black with 7″ quad rail (picatinny). Includes BCG, charging handle, LPK, buffer tube, and an 80% stripped lower receiver.

The DT10-006 is a complete 7.5″ chrome moly, phosphate finish .300 Blackout pistol build kit finished in Black, bundled with an 80% stripped lower receiver — everything needed to build a pistol from the ground up.

  • Caliber – .300 AAC Blackout
  • Barrel – 7.5″ Chrome Moly, phosphate finish
  • Twist Rate – 1:8
  • Gas System – Pistol-length
  • Muzzle Device – A2 Flash Hider, 5/8″-24
  • Handguard – 7″ Quad Rail (Picatinny)
  • Upper Receiver – M4 flat-top
  • Finish – Black
  • Lower Receiver – 80% stripped lower receiver included

What’s Included: a complete M4 flat-top upper — chrome moly barrel, mil-spec .300 BLK-specific BCG and charging handle, 7″ quad rail (picatinny) handguard, gas block and tube — plus a mil-spec Lower Parts Kit, a US-made pistol buffer tube with buffer and spring, and an 80% stripped lower receiver. It does not include a magazine, jig/tooling, or sights.

This complete Pistol Kit is not an FFL item because the lower is not complete — it is machined 80% and still needs machining to finish. Pair it with our 80% lower jig kit, or browse our full lineup of AR-15 300 Blackout Pistol Build Kits.

WE DO NOT SHIP 80% LOWER RECEIVERS TO THE FOLLOWING STATES – NY, RI, NJ, CT, MD, DE, HI, IL, NV, CA, WA, DISTRICT OF COLUMBIA, DENVER, CO OR BOULDER, CO

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov

Weight 7.2 lbs
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Picatinny

1 review for 7.5″ 300 AAC Blackout Pistol Complete Kit with 80% Lower

  1. Avatar of reviewer Timothy A Scheiern
    5 out of 5

    Timothy A Scheiern

    Great prices, will be back to do more shopping.


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Q: Does this kit include a lower receiver?
A: Yes — the DT10-006 includes an 80% stripped lower receiver, which still requires machining (jig and tooling sold separately) before it’s a complete, legal lower.

Q: What caliber is this kit chambered in?
A: The DT10-006 is chambered in 300 AAC Blackout, with a 1:8 twist 7.5″ barrel, topped with an A2 Flash Hider, 5/8″-24. Because 300 AAC Blackout uses a caliber-specific BCG, it isn’t interchangeable with a different caliber’s bolt carrier.

Q: Can I run this suppressed?
A: Yes, and the DT10-006 is a good candidate for it: 7.5″ .300 Blackout barrels are a favorite for subsonic, suppressed shooting. You’ll need your own NFA tax stamp and suppressor.

Q: What handguard is installed, and does it free-float the barrel?
A: The DT10-006 uses a 7″ Quad Rail (Picatinny) handguard, free-floated off the barrel for consistent accuracy and zero retention under sustained fire.

Q: What gas system does the 7.5″ barrel use?
A: Pistol-length gas system. On the DT10-006’s 7.5″ barrel, that length keeps the action running reliably without over- or under-gassing.

Q: Can this be built as a rifle instead of a pistol?
A: At 7.5″, the DT10-006’s barrel falls well short of the 16″ rifle-length minimum. Building it with a shouldered stock rather than a brace reclassifies it as an SBR under the NFA — that requires ATF Form 1 approval and a tax stamp before you assemble it that way.