Proof Research PR15 Stainless Steel Barrel 6mm ARC 20in RIFLE+1 Length 1-7.5 Twist 5/8-24 Thread Standart 4 Groove
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Overview
The Proof Research PR15 Stainless Steel Barrel in 6mm ARC is a 20-inch rifle-length barrel designed for precision and reliability. With a 1-7.5 twist rate, it stabilizes a range of bullet weights, making it suitable for both target shooting and hunting applications. The 5/8x24 thread pitch allows for easy attachment of muzzle devices, enhancing versatility for various builds. This barrel is commonly found in precision-oriented setups where accuracy and performance are prioritized.
Specifications
Proof Research PR15 Stainless Steel Barrel 6mm ARC 20in RIFLE+1 Length 1-7.5 Twist 5/8-24 Thread Standart 4 Groove
Available Merchants(7)
Prices checked
Price Alert
Build history on GunPartPicker
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 5 of the 7 retailers we track have it in stock. It dipped to $493.49 at Ammunition Depot for a stretch in October 2026, well under its usual $649, so sales do come around. Buying today, the lowest price is $649 at Brownells, above October's low of $493.49, so a better deal may come back.
Prices checked · refreshed daily across 37 retailers
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Builds Featuring This Part
See all builds →Builds in the community that include the Proof Research PR15 Stainless Steel Barrel 6mm ARC 20in Rifle+1 Length 1-7.5 Twist 5/8-24 Thread Standart 4 Groove
| Build | Parts | Total |
|---|---|---|
 | 14 | $1515.53 |
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