Proof Research PR10 Stainless Steel CamGas 20in 6.5CM Rifle Length plus 2in Rifle Barrel 264cal 0.875GB 8 Twist 5/8 x 24

Name: Proof Research PR10 Stainless Steel CamGas 20in 6.5CM Rifle Length plus 2in Rifle Barrel 264cal 0.875GB 8 Twist 5/8 x 24
Brand: Proof Research
Availability: InStock

Proof Research · Barrels

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Best price

$549.99at GunMag Warehouse

In stock checked Oct 31, 2026

Buy at GunMag Warehouse

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Where to buy

Store	Price	Availability	Buy
GunMag Warehouse Best price	$549.99checked Oct 31, 2026	In stock	Buy at GunMag Warehouse
OpticsPlanet	$649.00Salechecked Oct 31, 2026	In stock	Buy at OpticsPlanet
Battlehawk Armory	$572.25Salechecked Oct 31, 2026	Check store	Buy at Battlehawk 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

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Lowest in-stock price in the last 30 days: $549.99 at GunMag Warehouse. Dashed line = out of stock. Tracking since Oct 12, 2026.

Show the prices as a table

Store	Latest	Lowest	Highest
Battlehawk Armory	$572.25	$572.25	$572.25
GunMag Warehouse	$549.99	$549.99	$649.99
OpticsPlanet	$649.00	$649.00	$649.00

Since Oct 12, 2026.

About this part

The Proof Research PR10 Stainless Steel CamGas 20in 6.5CM Rifle Length plus 2in Rifle Barrel 264cal 0.875GB 8 Twist 5/8 x 24 is a 2E+1" 6.5 Creedmoor barrel from Proof Research with a rifle gas system. It's sold by 3 stores (2 in stock), from $549.99 to $649.00. The lowest in-stock price in the last 30 days was $549.99 at GunMag Warehouse.

Fits and works with

Caliber: 6.5 Creedmoor · Shop matching ammo
Bolt: AR-10 (.308 / 6.5 CM) · Bolt carrier groups
Gas system: Rifle · Handguards
Muzzle thread: 5/8x24 · Muzzle devices
Barrel length: 2E+1" · Handguards

Specifications

Manufacturer: Proof Research
Platform: AR-10
Caliber: 6.5 Creedmoor
Gas system: Rifle
Barrel length: 20"
Thread pattern: 5/8 x 24

From the manufacturer

Proof Research PR10 Stainless Steel CamGas 20in 6.5CM Rifle Length plus 2in Rifle Barrel 264cal 0.875GB 8 Twist 5/8 x 24. 5CM Deepfeed Rifle Barrels take your next modification or build out to the next level. These AR15 Barrels from the trendsetters at Proof Research feature lightweight construction that blows traditional models out of the water. With extreme temperature resistance Proof Research PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels can withstand repeated use and firings. Thanks to unprecedented durability this aftermarket accessory features top-rated aerospace-grade construction. Improve your performance and reliability with the PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels. Specifications for Proof Research PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels: Manufacturer: Proof Research Color: Silver Fabric/Material: Stainless Steel Caliber: 6.5mm Creedmoor Barrel Profile: Contour 0.875GB Gas System Length: Rifle +2 Length Gas Block Journal Size-Diameter: .875 in Barrel Twist Rate: 1-8 Flutes: No Firearms Threads Per Inch: 5/8x24 Features of Proof Research PR10 Stainless Steel Rifle Barrels 2SB-BRI-PR10SSCGC Lightweight Extreme Temperature Resistance Unprecedented durability Package Contents: Proof Research PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels 2SB-BRI-PR10SSCGC Proof Research PR10S200264FBB8B65CM: PR10 Stainless Steel CamGas 20in 6.5CM Rifle Length plus 2in Rifle Barrel 264cal 0.875GB 8 Twist 5/8 x 24