Home / Barrels / Proof Research / Proof Research AR-15 Barrel 6mm ARC 18" Heavy Contour 1:7.5" Twist Stainless
▼ 17% below avg
Proof Research AR-15 Barrel 6mm ARC 18" Heavy Contour 1:7.5" Twist Stainless
Lowest Price
$479.99
MSRP
$749
Savings
36% off
Verified In Stock at
7 Stores
Updated
Aug 26, 2026
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Specifications
Description
Proof Research's steel barrels are produced in-house from double-stress relieved 416R stainless steel. This pre-hardened chromium steel is ideally suited for match grade rifle barrels. Each barrel is drilled, contoured and reamed to bore diameter. It is then cut rifled, lapped, and inspected via borescope. This ensures an extremely consistent and accurate finished product. FeaturesMatch-grade accuracyUnprecedented durabilityDouble-stress relieved 416R stainless steelSingle point cut rifled and twice hand lapped
