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.
Features
- 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 | 20 Inches |
Weight | 3.1875 Pound |
Twist | 1:7.5 |
Threads | 5/8″-24 |
Barrel Contour | Heavy |
Chrome Lined | No |
Gas System Length | Extended Rifle |
Gas Block Diameter | 0.75 Inches |
M4 Feed Ramps | Yes |
Country of Origin | United States of America |
Compatible With |
AR-15
|
Delivery Information
Shipping Weight | 3.850 Pounds |
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