Moriarti AR-15 5mm NATO 5 inch Upper Receiver Medium Micro Length 1-5 Twist 1/2x28 A2 Flash Hider Nitride
No ratings yetBest price
$229.99at OpticsPlanet
In stock Sale Lowest in 30 dayschecked Nov 13, 2026
Fits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 5" · Handguards
Specifications
- Manufacturer
- Moriarti
- Platform
- AR-15
- Caliber
- 5.56 mm NATO
- Barrel length
- 5"
- Twist rate
- 1:5
- Thread pattern
- ½ x 28
- Length
- 4"
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet | $229.99Salechecked Nov 13, 2026 | In stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Lowest in-stock price in the last 30 days: $229.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 15, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| OpticsPlanet | $229.99 | $229.99 | $229.99 |
Since Oct 15, 2026.
About this part
The Moriarti AR-15 5mm NATO 5 inch Upper Receiver Medium Micro Length 1-5 Twist 1/2x28 A2 Flash Hider Nitride is a 5" 5.56 / .223 upper receiver from Moriarti. One store lists it, OpticsPlanet at $229.99. The lowest in-stock price in the last 30 days was $229.99 at OpticsPlanet.
From the manufacturer
Moriarti AR-15 5mm NATO 5 inch Upper Receiver Medium Micro Length 1-5 Twist 1/2x28 A2 Flash Hider Nitride. 56 NATO 5 in Pistol Upper Assembly is precision-engineered for superior performance in a compact AR-15 pistol build. Featuring a 5-inch 4150 Chrome Moly Vanadium barrel with a nitride finish and a 1:5 twist rate this upper is ready for your Suppressor and ensures exceptional durability and accuracy. The A3 flat top upper receiver comes equipped with a forward assist and dust cover for enhanced functionality. Paired with a 4 in MLOK handguard for versatility and modularity this assembly is ready to take your AR build to the next level. Perfect for home defense or tactical use this upper does not include a bolt carrier group (BCG) or charging handle allowing you to customize your build to your preference. Specifications for Moriarti AR-15 5.56x45mm NATO 5 inch Upper Receiver: Manufacturer: Moriarti Caliber: 5.56x45mm NATO Barrel Length: 5 in Barrel Profile: Medium Gas System Length: Micro Barrel Twist Rate: 1-5 Firearms Threads Per Inch: 1/2x28 Muzzle Device: A2 Flash Hider Finish: Nitride Gun Model: AR-15 Fabric/Material: 4150 Chrome Moly Vanadium Gas Block Journal Size-Diameter: .750 in Handguard Length: 4 in Gun Rail: M-LOK Gun Make: AR Platform Package Contents: Moriarti AR-15 5.56x45mm NATO 5 inch Upper Receiver What firearm models does the manufacturer say Moriarti AR-15 5.56x45mm NATO 5 inch Upper Receiver is compatible with? The manufacturer suggests that Moriarti AR-15 5.56x45mm NATO 5 inch Upper Receiver is compatible with AR-15Moriarti MAR-556-4-A2: AR-15 5.56x45mm NATO 5 inch Upper Receiver Medium Micro Length 1-5 Twist 1/2x28 A2 Flash Hider Nitride
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