Proof Research PR10 Stainless Steel 18in 308 Win Rifle Length Rifle Barrel 30cal 0.75GB 10 Twist 5/8 x 24

Name: Proof Research PR10 Stainless Steel 18in 308 Win Rifle Length Rifle Barrel 30cal 0.75GB 10 Twist 5/8 x 24
Brand: Proof Research
Availability: InStock

Proof Research · Barrels

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Best price

$535.92at MidwayUSA

In stock Sale Lowest in 30 dayschecked Nov 11, 2026

Buy at MidwayUSA

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Where to buy

Store	Price	Availability	Buy
MidwayUSA Best price	$535.92Salechecked Nov 11, 2026	In stock	Buy at MidwayUSA
OpticsPlanet	$649.00Salechecked Nov 11, 2026	In stock	Buy at OpticsPlanet
GunMag Warehouse	$649.99checked Nov 11, 2026	In stock	Buy at GunMag Warehouse
Battlehawk Armory	$572.25Salechecked Nov 11, 2026	Check store	Buy at Battlehawk Armory
GrabAGun	$649.00Salechecked Nov 12, 2026	Check store	Buy at GrabAGun
Brownells	$579.00checked Nov 11, 2026	Out of stock	Buy at Brownells

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: $535.92 at MidwayUSA. 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
Brownells	$579.00	$579.00	$579.00
GrabAGun	$649.00	$649.00	$649.00
GunMag Warehouse	$649.99	$649.99	$649.99
MidwayUSA	$535.92	$535.92	$584.10
OpticsPlanet	$649.00	$649.00	$649.00

Since Oct 12, 2026.

About this part

The Proof Research PR10 Stainless Steel 18in 308 Win Rifle Length Rifle Barrel 30cal 0.75GB 10 Twist 5/8 x 24 is an 18" .308 / 7.62x51 barrel from Proof Research with a rifle gas system. It's sold by 6 stores (3 in stock), from $535.92 to $649.99. The lowest in-stock price in the last 30 days was $535.92 at MidwayUSA.

Fits and works with

Caliber: .308 / 7.62x51 · 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: 18" · Handguards

Specifications

Manufacturer: Proof Research
Platform: AR-10
Caliber: .308 / 7.62
Gas system: Rifle
Barrel length: 18"
Thread pattern: 5/8 x 24

From the manufacturer

Proof Research PR10 Stainless Steel 18in 308 Win Rifle Length Rifle Barrel 30cal 0.75GB 10 Twist 5/8 x 24. These Rifle Barrels made by Proof Research are constructed from stress-proof stainless steel and can handle the full load of .308 ammo. For those looking to enhance their 308 rifle consider a Proof Research PR10 .308 Barrel. These barrels offer high heat tolerances and extreme accuracy. With these your 308 will be the envy of the shooting community. Gain a long-lasting edge over your opponents when you're on the range or in the field with a Proof Research PR10 .308 Barrel. Specifications for Proof Research PR10 Stainless Steel 308 Win Deepfeed Rifle Barrels: Manufacturer: Proof Research Color: Silver Fabric/Material: Stainless Steel Caliber: .308 Winchester Barrel Length: 18 in Barrel Profile: Contour 0.75GB Gas System Length: Rifle Length Barrel Twist Rate: 1-10 Flutes: No Weight: 3.6 lb Firearms Threads Per Inch: 5/8x24 Features of Proof Research PR10 Stainless Steel 308 Win Deepfeed Rifle Barrels: Designed for AR10 Firearms 1-10 Twist Rate Chambered in .308 Winchester Package Contents: Proof Research PR10 Stainless Steel 308 Win Deepfeed Rifle Barrels Proof Research PR10S180300DAB10B308W: PR10 Stainless Steel 18in 308 Win Rifle Length Rifle Barrel 30cal 0.75GB 10 Twist 5/8 x 24