Proof Research Barrel AR-15 6mm ARC 1 in 7.5″ Twist Stainless Steel


Category: Product ID: 10553


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.



  • Match-grade accuracy
  • Unprecedented durability
  • Double-stress relieved 416R stainless steel
  • Single point cut rifled and twice hand lapped
  • Product Information

    Cartridge 6mm Advanced Rifle Cartridge (6mm ARC)
    Finish Stainless
    Material Stainless Steel
    Length 16 Inches
    Weight 2.75 Pound
    Twist 1:7.5
    Threads 5/8″-24
    Barrel Contour Heavy
    Chrome Lined No
    Gas System Length Rifle
    Gas Block Diameter 0.75 Inches
    M4 Feed Ramps Yes
    Country of Origin United States of America
    Compatible With


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