Material: 4140 Alloy Steel, HRA 65-68.
Finish: Phosphate.
Direct Replacement For W-A1 Upper Flash Hider Nut.
Recommended torque is 15-20 ft-lbs, Certified Gunsmith Recommended.
NOTE: Prices, specifications, and availability are subject to change without notice. We reserve the right to correct typographic, photographic, and/or descriptive errors.
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