6mm ARC 7.5 Twist 16" Carbon Fiber Barrel
$729.99 at GunMag Warehouse · 11 stores
In stock
Best price
$729.99at GunMag Warehouse
In stock Lowest in 30 dayschecked Nov 13, 2026
Fits and works with
- Caliber
- 6mm ARC · Shop matching ammo
- Bolt
- 6.5 Grendel / 6mm ARC · Bolt carrier groups
- Muzzle thread
- 5/8x24 · Muzzle devices
- Barrel length
- 2E+1" · Handguards
Specifications
- Manufacturer
- Proof Research
- Color
- Gray
- Platform
- AR-15
- Caliber
- 6mm ARC
- Barrel length
- 20"
- Twist rate
- 1:7.5
- Thread pattern
- 5/8 x 24
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GunMag Warehouse Best price | $729.99checked Nov 13, 2026 | In stock | Buy at GunMag Warehouse | |
| Brownells 17.76% off · ends Nov 15 · exclusions apply | $949.00checked Nov 13, 2026 | In stock | Buy at Brownells | |
| Ammunition Depot | $951.49checked Nov 13, 2026 | In stock | Buy at Ammunition Depot | |
| OpticsPlanet | $999.00Salechecked Nov 13, 2026 | In stock | Buy at OpticsPlanet | |
| MidwayUSA | $999.00checked Nov 13, 2026 | In stock | Buy at MidwayUSA | |
| AR15Discounts 5% off | $899.00checked Nov 13, 2026 | Check store | Buy at AR15Discounts | |
| Dirty Bird | $899.00checked Nov 13, 2026 | Check store | Buy at Dirty Bird | |
| Battlehawk Armory | $950.58Salechecked Nov 13, 2026 | Check store | Buy at Battlehawk Armory | |
| GrabAGun | $999.00Salechecked Nov 13, 2026 | Check store | Buy at GrabAGun | |
| Palmetto State Armory | $999.99checked Nov 13, 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: $729.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Sep 27, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| AR15Discounts | $899.00 | $899.00 | $899.00 |
| Ammunition Depot | $951.49 | $951.49 | $951.49 |
| Battlehawk Armory | $950.58 | $899.25 | $950.58 |
| Brownells | $949.00 | $949.00 | $949.00 |
| Dirty Bird | $899.00 | $899.00 | $899.00 |
| GrabAGun | $999.00 | $999.00 | $999.00 |
| GunMag Warehouse | $729.99 | $729.99 | $999.99 |
| MidwayUSA | $999.00 | $849.15 | $999.00 |
| OpticsPlanet | $999.00 | $999.00 | $999.00 |
| Palmetto State Armory | $999.99 | $999.99 | $999.99 |
Since Sep 27, 2026.
About this part
The 6mm ARC 1-7.5 Twist 20" Carbon Fiber Barrel is a 2E+1" 6mm ARC barrel from Proof Research. It's sold by 10 stores (5 in stock), from $729.99 to $999.99. The lowest in-stock price in the last 30 days was $729.99 at GunMag Warehouse.
From the manufacturer
PROOF Research's match-grade carbon fiber barrels are stronger, lighter, and as accurate as the finest precision steel barrels and will maintain their performance in the harshest conditions. Up to 64% lighter than traditional steel barrels Match-grade accuracy Improved heat dissipation for cooler and longer lasting barrels No point-of-impact shift during high-volume fire Reduced harmonic barrel vibration Unprecedented durability Mfg: Proof Research
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