AR57 ULT Upper Receiver Assembly 5.7x28mm 18in 16in Barrel 1/2x28 Thread
$647.99 at OpticsPlanet · 5 stores
In stock Sale
Best price
$699.99at OpticsPlanet
In stock Sale checked Oct 23, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| OpticsPlanet Best price | $699.99Salechecked Oct 23, 2026 | In stock | Buy at OpticsPlanet | |
| Kentucky Gun Co | $711.85checked Oct 23, 2026 | In stock | Buy at Kentucky Gun Co | |
| MidwayUSA | $729.99checked Oct 23, 2026 | In stock | Buy at MidwayUSA | |
| Ammunition Depot | $784.49checked Oct 23, 2026 | In stock | Buy at Ammunition Depot | |
| Palmetto State Armory | $599.99Salechecked Oct 23, 2026 | Check store | Buy at Palmetto State Armory |
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: $699.99 at OpticsPlanet. Dashed line = out of stock. Tracking since Oct 12, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Ammunition Depot | $784.49 | $784.49 | $784.49 |
| Kentucky Gun Co | $711.85 | $711.85 | $711.85 |
| MidwayUSA | $729.99 | $729.99 | $729.99 |
| OpticsPlanet | $699.99 | $699.99 | $699.99 |
| Palmetto State Armory | $599.99 | $599.99 | $599.99 |
Since Oct 12, 2026.
About this part
The AR57 ULT Upper Receiver Assembly 12in Barrel 5.7x28mm Caliber is a 12" upper receiver from Ar57. It's sold by 5 stores (4 in stock), from $599.99 to $784.49. The lowest in-stock price in the last 30 days was $699.99 at OpticsPlanet.
Fits and works with
- Barrel length
- 12" · Handguards
Specifications
- Manufacturer
- Ar57
From the manufacturer
AR57 ULT Upper Receiver Assembly 12in Barrel 5.7x28mm Caliber. 7x28mm Upper Receiver Assembly: Manufacturer: AR57 Caliber: 5.7x28mm Overall Length: 24.5 in Barrel Length: 12 in Barrel Twist Rate: 1-8.5 Firearms Threads Per Inch: 1/2x28 Muzzle Device: Muzzle Brake Finish: Melonite Color: Black Fabric/Material: 7075-T6 Aircraft Grade Aluminum 8620 Alloy Steel Gun Type: Automatic Rifle Rifle Gun Make: AR Platform Rifling Profile: 6 Groove Rifling Magazine Included: No Condition Details: Other Condition: New Condition Quality: Excellent Included Accessories: Standard Mount Type: Picatinny Attachment Type: Picatinny Threads per Inch: 1/2x28 Package Contents: AR57 ULT 12in Barrel 5.7x28mm Upper Receiver Assembly AR57 AR57ULT-12: ULT Upper Receiver Assembly 12in Barrel 5.7x28mm Caliber
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