The flash hider-QD 556 is meticulously crafted to minimize flash when used without a suppressor. It measures 2.96 inches in length, adding 2.34 inches to the barrel. Specifically designed for 13.7 inches platforms, it extends the barrel to achieve an overall length of 16 inches (for barrels with 0.6 inches threads) and on 13.9 inches platforms, it extends to 16.2 inches overall length. It comes pre-drilled for straightforward pinning and welding.