7.5″ M-lok Pistol Kit no lower
Original price was: $459.00.$299.95Current price is: $299.95.
7.5″ 5.56 AR-15 pistol kit with a Black free-float M-Lok handguard and chrome moly Nitride barrel. Lower Parts Kit and buffer tube included; no lower receiver.
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- FAQ
The DT10-173 pairs a 7.5″ chrome moly, Nitride-finished 5.56 barrel with a slim, free-float Black M-Lok handguard for a lightweight AR-15 pistol build. This is an upper-only kit with no 80% lower receiver included.
- 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″ Black M-Lok, free float
- BCG – Nitride-coated, mil-spec
- Lower Receiver – Not included
What’s Included: a complete barreled upper — chrome moly Nitride barrel, mil-spec BCG and charging handle, free-float M-Lok handguard, gas block and tube. It also includes 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.
Browse our full lineup of AR-15 .223/556 Pistol Build Kits, or pair this upper with one of our Black 80% lower receiver to finish your build.
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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| Accessory Attachment Style | M-lok |
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Q: Does this kit include a lower receiver?
A: No — the DT10-173 is an upper-only kit; you’ll need to supply your own AR-15 lower (stripped, complete, or 80%) to finish the build.
Q: What caliber is this kit chambered in?
A: The DT10-173 is chambered in 5.56 NATO (.223/5.56), with a 1:7 twist 7.5″ barrel, threaded 1/2″-28. Because 5.56 NATO uses a caliber-specific BCG, it isn’t interchangeable with a different caliber’s bolt carrier.
Q: Does the twist rate matter for the ammo I run?
A: It does. At a 1:7 twist, the DT10-173 handles the full range of common 5.56/.223 loads, including heavier 62–77gr bullets that slower twists struggle to stabilize.
Q: What handguard is installed, and does it free-float the barrel?
A: The DT10-173 uses a 7″ Black M-Lok 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: A pistol-length gas system, sized specifically for the DT10-173’s 7.5″ barrel to keep the action cycling reliably.
Q: Can this be built as a rifle instead of a pistol?
A: Only with a lower and stock combination that complies with current ATF rules. The DT10-173’s 7.5″ barrel is below the 16″ rifle-length minimum, so pairing it with a shouldered stock instead of a brace makes it an SBR under the NFA, requiring registration and a tax stamp first.
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