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Sig Proof Research

Proof Research is a leader in firearm innovation, specializing in advanced carbon fiber barrels and precision rifle systems engineered for extreme accuracy and reduced weight. Their patented manufacturing process combines aerospace-grade materials with rigorous quality control, resulting in barrels that are up to 50% lighter than traditional steel while maintaining match-grade performance and durability. Shop Proof Research rifles and barrels to experience their commitment to precision and reliability. Featured products include popular chamberings like .223 Rem and 7mm PRC, available in bolt-action platforms designed for hunters and long-range shooters. Each barrel is crafted from 416R stainless steel and wrapped with aerospace-grade carbon fiber for superior strength, stiffness, and thermal performance. Browse Proof Research to find high-performance solutions for demanding environments.

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9 Product(s)
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Proof Research 134467 Sig Cross Carbon Fiber Pre-Fit Barrel .308 Win 16"

Proof Research 134467 Sig Cross Carbon Fiber Pre-Fit Barrel .308 Win 16"

$1149 00
In Stock
Only 6 Left!
As low as $141.31/mo with . Learn More
Proof Research 134535 Pre-Fit Barrel 6.5 Creedmoor 20" Stainless Steel Sig Cross

Proof Research 134535 Pre-Fit Barrel 6.5 Creedmoor 20" Stainless Steel Sig Cross

$849 00
In Stock
Only 2 Left!
As low as $151.98/mo with . Learn More
Proof Research Bolt Action Barrel 138939 16" .260 Rem Carbon Fiber 5/8-24 Thread Pre-Fit for Sig Cross

Proof Research Bolt Action Barrel 138939 16" .260 Rem Carbon Fiber 5/8-24 Thread Pre-Fit for Sig Cross

$1149 00
In Stock
Only 2 Left!
As low as $141.31/mo with . Learn More
Proof Research Bolt Action Barrel Pre-Fit 138946 18" Carbon Fiber .260 Rem 1:8" Twist for Sig Cross

Proof Research Bolt Action Barrel Pre-Fit 138946 18" Carbon Fiber .260 Rem 1:8" Twist for Sig Cross

$1149 00
In Stock
Only 2 Left!
As low as $141.31/mo with . Learn More
Proof Research Bolt Action Barrel 138953 20" .260 Rem Carbon Fiber Pre-Fit for Sig Cross

Proof Research Bolt Action Barrel 138953 20" .260 Rem Carbon Fiber Pre-Fit for Sig Cross

$1149 00
In Stock
Only 1 Left!
As low as $141.31/mo with . Learn More
Proof Research Bolt Action Barrel 138960 20" .260 Rem Stainless Steel 1:8" Twist Pre-Fit for Sig Cross

Proof Research Bolt Action Barrel 138960 20" .260 Rem Stainless Steel 1:8" Twist Pre-Fit for Sig Cross

$849 00
In Stock
Only 2 Left!
As low as $151.98/mo with . Learn More
Proof Research 134528 Sig Sauer Cross Pre-Fit Barrel 6.5 Creedmoor 20" Carbon Fiber

Proof Research 134528 Sig Sauer Cross Pre-Fit Barrel 6.5 Creedmoor 20" Carbon Fiber

$1149 00
In Stock
Only 3 Left!
As low as $141.31/mo with . Learn More
Proof Research Bolt Action Barrel 134474 18" Carbon Fiber 308 Win 1:10 Twist 5/8-24 Pre-Fit for Sig Cross

Proof Research Bolt Action Barrel 134474 18" Carbon Fiber 308 Win 1:10 Twist 5/8-24 Pre-Fit for Sig Cross

$1149 00
In Stock
Only 1 Left!
As low as $141.31/mo with . Learn More
Proof Research 134481 Barrel Bolt .308 Winchester 20 CF SIG Cross Drop IN

Proof Research 134481 Barrel Bolt .308 Winchester 20 CF SIG Cross Drop IN

$1149 00
In Stock
Only 2 Left!
As low as $141.31/mo with . Learn More
9 Product(s)
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