OD Green 16″ Unassembled Upper Build Kit – 12″ Keymod
$204.95
Build a 16″ 5.56 NATO AR-15 rifle upper with an OD Green Cerakote receiver and 12″ free-floating KeyMod handguard. Kit includes a 4150 phosphate barrel with 1:7 twist, carbine-length gas system, A2 flash hider, and all mil-spec hardware. BCG and charging handle available as add-on options. SKU DT11-226.
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OD Green 16″ Unassembled Upper Build Kit – 12″ Keymod
This 16″ 5.56 NATO unassembled AR rifle upper build kit pairs a 4150 CMV barrel with a 12″ Keymod free-float handguard on a carbine-length gas system, finished in OD Green Cerakote. The barrel runs a 1:7 RH twist with a manganese phosphate finish, 1/2×28 muzzle thread, and a .750″ gas block journal. Prefer M-LOK instead? See the matching OD Green kit with 12″ M-LOK handguard, or browse more AR-15 upper build kits in this lineup.
Specifications:
- Caliber: 5.56 NATO / .223 Wylde compatible
- Barrel: 16″, 4150 CMV, manganese phosphate finish, M4 contour, 1:7 RH twist, 1/2×28 TPI, .750″ gas block journal, carbine-length gas
- Upper receiver: Forged 7075-T6, M4 feed ramps, OD Green Cerakote
- Handguard: 12″ Keymod free-float, 6061-T6 aluminum, OD Green Cerakote
- SKU: DT11-226
- Upper receiver
- 16″ barrel
- Handguard with barrel nut and mounting screws
- Forward assist assembly
- Dust cover assembly
- A2 flash hider with crush washer
What’s included:
- Gas block with pin
Note: Gas tube
| Weight | 5 lbs |
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Frequently Asked Questions
Is OD Green Cerakote the same shade as military rifles?
Similar in character, but not identical. Military rifles were typically painted or parkerized in OD Green (Federal Standard 34094 or similar), which has a flatter, more matte appearance. Cerakote OD Green is a polymer-ceramic coating that’s more durable than period military finishes — it reads as OD Green but with a cleaner, more consistent surface. The color intent is the same; the durability and corrosion resistance are significantly better.
What’s included and what’s not?
Included: OD Green Cerakote stripped upper receiver, 16″ barrel, 12″ KeyMod handguard, carbine-length gas system, A2 flash hider with crush washer, dust cover with door hardware, mil-spec forward assist, low-profile gas block, and stainless steel gas tube. Not included: bolt carrier group (BCG) and charging handle — both available as add-on options on this product page.
What lower receiver does this fit?
Any standard mil-spec AR-15 lower. The upper uses mil-spec 7075-T6 aluminum with standard M4 feed ramps and threading.
What gas system length does this use?
Carbine-length — standard for 5.56 NATO on a 16″ barrel.
Can I swap out the A2 flash hider?
Yes. The barrel is threaded 1/2″×28. Unthread the A2 flash hider and install any compatible 1/2″×28 muzzle device — suppressor mount, compensator, or brake.
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