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Proof Research AR-15 Barrels, AR-10 Barrels & Other Rifle Barrels and Accessories — 461 products / 1,172 models

Proof Research is revolutionizing the firearms industry by applying science, technology, and manufacturing excellence to produce carbon fiber rifle barrels that exceed the performance of competing barrels. Proof Research has gathered some of the finest talent, experience, and innovations to produce carbon fiber barrels and complete rifle systems that are setting new industry standards and have gained a reputation among backcountry hunters, precision rifle competitors, and military operators for ruggedness, reduced weight, and extreme accuracy. Their unique manufacturing processes and advanced technology composite materials allow them to produce match-grade carbon fiber AR barrels that weigh a fraction of traditional steel rifle barrels while compromising nothing. They're not just lighter—they're better.image

Proof Research offers a limited warranty on its AR-15 and AR-10 barrels to ensure your order lives up to their high expectations. Explore our range today to find the best barrel upgrade chambered in 300 Blackout, 6mm ARC, 6.5 PRC, and other popular and niche calibers. Browse our muzzle devices on sale to find a compatible muzzle brake, compensator, or flash hider to further improve your firearm's performance. Also, check out our AR Barrel Guides to learn more about the benefits of Proof carbon fiber barrels. Shop online at OpticsPlanet today and get Free Shipping on most orders over $49.

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461 Products in Proof Research

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Image of Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel Proof Research Barrett MRAD Pre-Fit Steel 7mm PRC Threaded Rifle Barrel List: $1,699.00 (Save 12%) $1,499.00
Image of Proof Research PR15 6mm ARC Carbon Fiber Threaded Barrel 4 models Proof Research PR15 6mm ARC Carbon Fiber Threaded Barrel (4) List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel 10 models Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel (1) List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Barrett MRAD Pre-Fit Steel 6.5mm Creedmoor Threaded Rifle Barrel Proof Research Barrett MRAD Pre-Fit Steel 6.5mm Creedmoor Threaded Rifle Barrel List: $1,699.00 (Save 12%) $1,499.00
Image of Proof Research Defiance Ruckus Pre-Fit Barrels Proof Research Defiance Ruckus Pre-Fit Barrels List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels 15 models Proof Research Q Fix Pre-Fit Carbon Fiber Threaded Barrels (3) List: $1,249.00 (Save 12%) $1,099.00 Free 2 Day Shipping
Image of Proof Research Barrett MRAD Pre-Fit Steel .308 Winchester Threaded Rifle Barrel Proof Research Barrett MRAD Pre-Fit Steel .308 Winchester Threaded Rifle Barrel List: $1,699.00 (Save 12%) $1,499.00
Image of Proof Research PR15 Carbon Fiber .300 AAC Blackout Rifle Barrel Proof Research PR15 Carbon Fiber .300 AAC Blackout Rifle Barrel List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Tikka Carbon 6mm Creedmoor Threaded Rifle Barrel Proof Research Tikka Carbon 6mm Creedmoor Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Tikka Pre-Fit Carbon Fiber Threaded Barrels 12 models Proof Research Tikka Pre-Fit Carbon Fiber Threaded Barrels As Low As (Save Up to 22%) $899.99 Free 2 Day Shipping
Image of Proof Research PR15 6mm ARC Stainless Steel Threaded Barrel 5 models Proof Research PR15 6mm ARC Stainless Steel Threaded Barrel (8) As Low As (Save Up to 29%) $529.99 Clearance
Image of Proof Research Carbon Fiber Barrel for Bolt Action Rifle 24 models Proof Research Carbon Fiber Barrel for Bolt Action Rifle As Low As (Save Up to 26%) $739.99 Blazin' Deal
Image of Proof Research Defiance Ruckus Steel 6mm GT Threaded Rifle Barrel Proof Research Defiance Ruckus Steel 6mm GT Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Defiance Ruckus Carbon Pre-Fit Threaded Barrels 9 models Proof Research Defiance Ruckus Carbon Pre-Fit Threaded Barrels (1) As Low As (Save Up to 24%) $869.99 10% Coupon
Image of Proof Research Zermatt Arms Pre-Fit 7PRC Barrels 3 models Proof Research Zermatt Arms Pre-Fit 7PRC Barrels (1) As Low As (Save Up to 24%) $869.99 Free 2 Day Shipping
Image of Proof Research Zermatt Origin Drop In Arms Carbon Fiber .22 Creedmoor Threaded Rifle Barrel 2 models Proof Research Zermatt Origin Drop In Arms Carbon Fiber .22 Creedmoor Threaded Rifle Barrel As Low As (Save Up to 22%) $899.99 Free 2 Day Shipping
Image of Proof Research Zermatt Tl3/Sr3 La Drop In Arms Carbon Fiber .300 PRC Threaded Rifle Barrel Proof Research Zermatt Tl3/Sr3 La Drop In Arms Carbon Fiber .300 PRC Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research AR-Style Barrel 2 models Proof Research AR-Style Barrel (4) As Low As (Save 13%) $649.00 Free 2 Day Shipping
Image of Proof Research Zermatt Arms Pre-Fit Stainless Steel Threaded Barrels 17 models Proof Research Zermatt Arms Pre-Fit Stainless Steel Threaded Barrels (4) As Low As (Save Up to 23%) $579.99 Final Sale
Image of Proof Research Zermatt Arms Pre-Fit Carbon Fiber Threaded Barrels 21 models Proof Research Zermatt Arms Pre-Fit Carbon Fiber Threaded Barrels As Low As (Save Up to 22%) $899.99 Free 2 Day Shipping
Image of Proof Research Stiller Steel .22 Creedmoor Threaded Rifle Barrel Proof Research Stiller Steel .22 Creedmoor Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Lone Peak Carbon 7mm PRC Threaded Rifle Barrel 2 models Proof Research Lone Peak Carbon 7mm PRC Threaded Rifle Barrel List: $1,099.00 (Save Up to 13%) $999.00
Image of Proof Research American Rifle Company Coup De Grace Carbon .300 PRC Threaded Rifle Barrel 2 models Proof Research American Rifle Company Coup De Grace Carbon .300 PRC Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research PXT Defiance Ruckus 7mm PRC Threaded Rifle Barrel 2 models Proof Research PXT Defiance Ruckus 7mm PRC Threaded Rifle Barrel List: $1,349.00 (Save 15%) $1,149.00
Image of Proof Research PR10 Carbon Fiber 308 Win Rifle Barrels 2 models Proof Research PR10 Carbon Fiber 308 Win Rifle Barrels (7) List: $1,149.00 (Save 13%) $999.00 Best Rated
Image of Proof Research Tikka Carbon 7mm PRC Threaded Rifle Barrel 2 models Proof Research Tikka Carbon 7mm PRC Threaded Rifle Barrel (1) List: $1,149.00 (Save 13%) $999.00 Free 2 Day Shipping
Image of Proof Research Q Fix Carbon .223 Remington Threaded Rifle Barrel 2 models Proof Research Q Fix Carbon .223 Remington Threaded Rifle Barrel List: $1,249.00 (Save 12%) $1,099.00
Image of Proof Research PR10 Carbon Fiber CamGas 6.5CM Deepfeed Rifle Barrels 3 models Proof Research PR10 Carbon Fiber CamGas 6.5CM Deepfeed Rifle Barrels (4) List: $1,149.00 (Save 13%) $999.00
Image of Proof Research Zermatt Origin Drop In Arms Carbon Fiber .338 ARC Threaded Rifle Barrel Proof Research Zermatt Origin Drop In Arms Carbon Fiber .338 ARC Threaded Rifle Barrel List: $1,149.00 (Save 23%) $881.49 Blazin' Deal
Image of Proof Research Accuracy International Pre-Fit Carbon Fiber Barrel 30 models Proof Research Accuracy International Pre-Fit Carbon Fiber Barrel (1) As Low As (Save Up to 23%) $1,077.49 Blazin' Deal
Image of Proof Research Zermatt Origin Drop In Arms Steel 7mm PRC Threaded Rifle Barrel Proof Research Zermatt Origin Drop In Arms Steel 7mm PRC Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Bolt Action Carbon Fiber Blank Barrels 28 models Proof Research Bolt Action Carbon Fiber Blank Barrels As Low As (Save Up to 33%) $669.99 Clearance
Image of Proof Research PXT AR Platform 6mm ARC Threaded AR Barrel 8 models Proof Research PXT AR Platform 6mm ARC Threaded AR Barrel As Low As (Save Up to 17%) $749.00
Image of Proof Research AR Steel .223 Wylde Threaded Rifle Barrel 9 models Proof Research AR Steel .223 Wylde Threaded Rifle Barrel (1) List: $749.00 (Save 13%) $649.00 Free 2 Day Shipping
Image of Proof Research Impact Precision Pre-Fit Stainless Steel Threaded Barrels 9 models Proof Research Impact Precision Pre-Fit Stainless Steel Threaded Barrels (2) As Low As (Save Up to 25%) $559.99 Final Sale
Image of Proof Research Carbon Fiber Bolt-Action Barrel 4 models Proof Research Carbon Fiber Bolt-Action Barrel (1) List: $999.00 (Save 10%) $899.00
Image of Proof Research Big Horn Pre-Fit Carbon Fiber Barrel 7 models Proof Research Big Horn Pre-Fit Carbon Fiber Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research Impact Precision Pre-Fit Carbon Fiber Threaded Barrels 10 models Proof Research Impact Precision Pre-Fit Carbon Fiber Threaded Barrels (1) As Low As (Save Up to 22%) $899.99 Final Sale
Image of Proof Research PXT Bolt-Action .284 Caliber Non Threaded Rifle Barrel 9 models Proof Research PXT Bolt-Action .284 Caliber Non Threaded Rifle Barrel List: $1,199.00 (Save 13%) $1,049.00
Image of Proof Research Defiance Ruckus Steel 7mm PRC Threaded Rifle Barrel Proof Research Defiance Ruckus Steel 7mm PRC Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Stiller Steel .25 Creedmoor SRP Threaded Rifle Barrel Proof Research Stiller Steel .25 Creedmoor SRP Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Lone Peak Carbon Pre-Fit Threaded Barrels 8 models Proof Research Lone Peak Carbon Pre-Fit Threaded Barrels List: $1,149.00 (Save 13%) $999.00
Image of Proof Research Falkor Steel 6.5mm Creedmoor Threaded Rifle Barrel Proof Research Falkor Steel 6.5mm Creedmoor Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research Defiance Ruckus Steel .25 Creedmoor SRP Threaded Rifle Barrel Proof Research Defiance Ruckus Steel .25 Creedmoor SRP Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research PR15 Stainless Steel 300BLK Rifle Barrels Proof Research PR15 Stainless Steel 300BLK Rifle Barrels (2) List: $749.00 (Save 13%) $649.00
Image of Proof Research Sig Cross Carbon .22 Creedmoor Threaded Rifle Barrel 2 models Proof Research Sig Cross Carbon .22 Creedmoor Threaded Rifle Barrel List: $1,299.00 (Save 12%) $1,149.00
Image of Proof Research Carbon Fiber 24 inch Barrel, Bolt 19 models Proof Research Carbon Fiber 24 inch Barrel, Bolt As Low As (Save Up to 29%) $529.99 Clearance
Image of Proof Research Impact Precision Steel .25 Creedmoor SRP Threaded Rifle Barrel Proof Research Impact Precision Steel .25 Creedmoor SRP Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research AR Steel 6mm ARC Threaded Rifle Barrel Proof Research AR Steel 6mm ARC Threaded Rifle Barrel (1) List: $749.00 (Save 13%) $649.00
Image of Proof Research Impact Precision Carbon .22 Creedmoor Threaded Rifle Barrel Proof Research Impact Precision Carbon .22 Creedmoor Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research AR-Type Carbon Fiber Barrel 3 models Proof Research AR-Type Carbon Fiber Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research Zermatt Tl3/Sr3 Sa Drop In Arms Steel 6mm GT Threaded Rifle Barrel 2 models Proof Research Zermatt Tl3/Sr3 Sa Drop In Arms Steel 6mm GT Threaded Rifle Barrel As Low As (Save Up to 23%) $579.99 Final Sale
Image of Proof Research Sig Cross Carbon 6.5mm Creedmoor Threaded Rifle Barrel 3 models Proof Research Sig Cross Carbon 6.5mm Creedmoor Threaded Rifle Barrel List: $1,299.00 (Save 12%) $1,149.00
Image of Proof Research Defiance Ruckus Pre-Fit Stainless Steel Threaded Barrels 6 models Proof Research Defiance Ruckus Pre-Fit Stainless Steel Threaded Barrels (3) List: $749.00 (Save 13%) $649.00
Image of Proof Research Impact Precision Steel 6mm GT Threaded Rifle Barrel Proof Research Impact Precision Steel 6mm GT Threaded Rifle Barrel List: $749.00 (Save 13%) $649.00
Image of Proof Research American Rifle Company Coup De Grace Carbon 7mm PRC Threaded Rifle Barrel 2 models Proof Research American Rifle Company Coup De Grace Carbon 7mm PRC Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research American Rifle Company Coup De Grace Carbon 6mm ARC Threaded Rifle Barrel 2 models Proof Research American Rifle Company Coup De Grace Carbon 6mm ARC Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research PR10 Stainless Steel 308 Win Deepfeed Rifle Barrels Proof Research PR10 Stainless Steel 308 Win Deepfeed Rifle Barrels (1) List: $749.00 (Save 13%) $649.00
Image of Proof Research Defiance Ruckus Carbon 7mm PRC Threaded Rifle Barrel Proof Research Defiance Ruckus Carbon 7mm PRC Threaded Rifle Barrel List: $1,149.00 (Save 13%) $999.00
Image of Proof Research PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels 4 models Proof Research PR10 Stainless Steel CamGas 6.5CM Deepfeed Rifle Barrels (6) As Low As (Save Up to 23%) $579.99 Best Rated
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    Last updated 2026-11-07 UTC.