The DT10-040 combines a 7.5″ chrome moly, Nitride-finished 5.56 barreled upper in Tungsten Grey with a complete Lower Parts Kit and pistol buffer tube assembly — everything you need except the stripped lower receiver itself.
- Caliber – 5.56 NATO (.223/5.56)
- Barrel – 7.5″ Chrome Moly, Nitride finish
- Twist Rate – 1:7
- Gas System – Pistol-length
- Muzzle Thread – 1/2″-28
- Handguard – 7″ Keymod, free float
- Finish – Tungsten Grey Cerakote
- Lower Receiver – Not included (Lower Parts Kit & buffer tube included)
What’s Included: a complete barreled upper — chrome moly Nitride barrel, mil-spec BCG and charging handle, Tungsten Grey Keymod free-float handguard, 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 stripped lower receiver, pistol brace, or magazine.
Pair this upper with our matching Tungsten Grey 80% lower receiver, or browse our full lineup of AR-15 .223/556 Pistol Build Kits.
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










