10.5″ M-lok Windows Pistol Kit
Original price was: $459.00.$309.95Current price is: $309.95.
10.5″ 5.56 AR-15 pistol kit with a Black M-Lok Windows free-float handguard and chrome moly Nitride barrel. Lower Parts Kit and buffer tube included; no lower receiver.
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The DT10-172 builds around a 10.5″ chrome moly, Nitride-finished 5.56 barrel and a Black M-Lok Windows free-float handguard for a longer-sighted AR-15 pistol setup. This is an upper-only kit — no 80% lower receiver is included. Note: some archived listings for this kit referenced a lower receiver in error; please confirm with us before ordering if you need lower-receiver inclusion.
- Caliber – 5.56 NATO (.223/5.56)
- Barrel – 10.5″ Chrome Moly, Nitride finish
- Twist Rate – 1:7
- Gas System – Carbine-length
- Muzzle Thread – 1/2″-28
- Handguard – 10″ Black M-Lok Windows, 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, M-Lok Windows free-float 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 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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Does this kit include an 80% lower receiver?
No — the lower receiver itself is not included, though this kit does ship with a mil-spec Lower Parts Kit and pistol buffer tube already in the box. If you’ve seen mixed information about lower-receiver inclusion on this listing, please contact us to confirm before ordering.
What caliber is this kit chambered in?
5.56 NATO, also compatible with .223 Remington.
What gas system does the 10.5″ barrel use?
A carbine-length gas system, matched to the longer barrel for reliable cycling.
What is the M-Lok Windows handguard?
A free-float M-Lok handguard with milled-out “windows” for reduced weight while retaining full M-Lok slot coverage.
Can this be built as a rifle instead of a pistol?
Only with a lower and stock configuration that complies with current ATF rules; check current NFA/SBR regulations before reconfiguring.
Is the barrel finish resistant to corrosion?
Yes. The Nitride finish resists corrosion and wear while improving heat dissipation.
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