10.5″ .300 Blackout Flat Dark Earth Pistol Kit 10″ Keymod
Original price was: $499.95.$359.95Current price is: $359.95.
10.5″ .300 Blackout AR-15 pistol kit in Flat Dark Earth with a free-float 10″ Keymod handguard. Lower Parts Kit and buffer tube included; no lower receiver.
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10.5″ .300 Blackout Flat Dark Earth Pistol Kit 10″ Keymod Features
The DT10-066 steps up with a 10.5″ chrome moly, Nitride-finished .300 Blackout barrel and a free-float 10″ Keymod handguard in Flat Dark Earth. This kit does not include a stripped lower receiver.
- Caliber – .300 AAC Blackout
- Barrel – 10.5″ Chrome Moly, Nitride finish
- Twist Rate – 1:7
- Gas System – Pistol-length
- Muzzle Device – A2 Flash Hider, 5/8″-24
- Handguard – 10″ Keymod, free float
- Finish – Flat Dark Earth
- Lower Receiver – Not included (BCG, LPK & buffer tube included)
What’s Included: a complete barreled upper — chrome moly Nitride barrel, mil-spec .300 Blackout-specific BCG and charging handle, Flat Dark Earth Keymod free-float handguard, A2 flash hider, gas block and tube — plus a mil-spec Lower Parts Kit and a US-made pistol buffer tube with buffer and spring. It does not include a lower receiver, pistol brace, or magazine.
Pair this upper with our matching Flat Dark Earth 80% lower receiver, or browse our full lineup of AR-15 300 Blackout Pistol Build Kits.
| Weight | 7.2 lbs |
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| Accessory Attachment Style | Keymod |
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Q: Does this kit include a lower receiver?
A: No — this kit is upper-only, though the BCG, mil-spec Lower Parts Kit, and buffer tube are included. You’ll need to supply your own AR-15 lower.
Q: What caliber is this kit chambered in?
A: Chambering on this kit is 300 AAC Blackout — a 1:7 twist, 10.5″ barrel, topped with an A2 Flash Hider, 5/8″-24. The BCG is caliber-specific to 300 AAC Blackout, so it won’t swap with a different caliber’s bolt carrier.
Q: Can I run this suppressed?
A: Yes. Run on this kit, .300 Blackout at 10.5″ is a popular suppressor host, especially with subsonic ammunition — you’ll need your own NFA-compliant suppressor and paperwork, none is included.
Q: Is the Flat Dark Earth finish just on the handguard, or the whole kit?
A: On this kit, the Flat Dark Earth finish covers the handguard and receiver-facing components of the upper; the barrel itself retains its Nitride finish.
Q: What gas system does the 10.5″ barrel use?
A: A pistol-length gas system, sized specifically for this kit’s 10.5″ barrel to keep the action cycling reliably.
Q: Can this be built as a rifle instead of a pistol?
A: This kit’s 10.5″ barrel is well under the 16″ minimum for a standard rifle barrel. Configuring this kit on a lower with a shouldered stock instead of a pistol brace makes it a Short-Barreled Rifle (SBR) under the NFA, requiring ATF Form 1 registration and an approved tax stamp before assembly.
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