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  1. Want to Buy WTB 556 Internals

    Buy Sell Trade (Non-FFL)
    Looking to buy spare internal parts for backup and replacement. Or can someone direct me to parts kits. I only seem to find aftermarket sights, mag releases and stuff like that. Here's what I'm rocking.
    bolt gas tube piston
    $1 USD
    1
  2. 556 Discussions
    My piston was binding in gas tube. Gun has 500 or so rounds through it. It just stop running one day. Sig replaced the gas tube and gave me no reason why. Anybody have any ideas what could have happen. Thank you.
    gas tube
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