6mm ARC 1-7.5 Twist 18" Stainless Steel Barrel
$616.55 at MidwayUSA · 7 stores
In stock Sale
Best price
$616.55at MidwayUSA
In stock Sale checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| MidwayUSA Best price | $616.55Salechecked Oct 1, 2026 | In stock | Buy at MidwayUSA | |
| GunMag Warehouse | $649.99checked Oct 1, 2026 | In stock | Buy at GunMag Warehouse | |
| Brownells | $649.00checked Oct 1, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $649.00Salechecked Oct 1, 2026 | Out of 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: $616.55 at MidwayUSA. Dashed line = out of stock. Tracking since Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $649.00 | $649.00 | $649.00 |
| GunMag Warehouse | $649.99 | $649.99 | $649.99 |
| MidwayUSA | $616.55 | $616.55 | $649.00 |
| OpticsPlanet | $649.00 | $649.00 | $649.00 |
Since Sep 28, 2026.
About this part
The 6mm ARC 1-7.5 Twist 14.5" Stainless Steel Barrel is a 14.5" 6mm ARC barrel from Proof Research. It's sold by 4 stores (2 in stock), from $616.55 to $649.99. The lowest in-stock price in the last 30 days was $616.55 at MidwayUSA.
Fits and works with
- Caliber
- 6mm ARC · Shop matching ammo
- Bolt
- 6.5 Grendel / 6mm ARC · Bolt carrier groups
- Barrel length
- 14.5" · Handguards
Specifications
- Manufacturer
- Proof Research
- Platform
- AR-15
- Caliber
- 6mm ARC
- Barrel length
- 14.5"
From the manufacturer
Proof Research makes their steel barrels in-house with the exact same commitment to quality and repeatability as employ on their carbon fiber barrels. The drilling, rifling, and lapping process is identical to their composite barrels. They start with the same steel as they use in the carbon fiber barrels. It is a double stress-relieved 416R stainless steel, a pre-hardened chromium stainless steel that was specifically designed by engineers in collaboration with rifle barrel makers to provide the consistent, high quality and durability the firearms industry demands. Mfg: Proof Research
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