Muzzle Brake-QD caliber/compatibility: Muzzle Brake-QD 556: HX-QD 556k, 556, 762, 762 Ti and Magnum Ti suppressors Muzzle device length is 2.3, length added to barrel is 1.7 inches
| Frame | Steel |
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| Model | Muzzle Brake-QD 556 |
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| Casing | Black |
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| Finish | Black |
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Determined at checkout.
