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piston rod
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  1. HK416 and HK417 HQ
    I have a piston rod assembly for the HK 416. It's from the brownells build kits they offered. I am in the process of building a 10.4 in. barrel version of the HK with this kit. Question....Will the piston rod assembly that came with this kit fit the 10.4 in barrel? I checked some dimensions...
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