Lumley Arms Round Carbon Fibre Tactical Bolt Knob
- Genuine 3K carbon fiber, 1″ round ball
- 6061-T6 threaded insert epoxied-in during manufacture
- 5/16″ x 24 TPI (UNF / fine thread) to accept most bolt handles
- Threaded section 0.55″ deep.
- Weighs less than half an ounce (13 grams)!
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