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1st-gen 522 522 folding stock 551 551 handguard 551a1 552 552 clone 553 556 556 classic 556 er 556 patrol 556 pistol 556 sig polymer handguard hand guard 556 swat 556r 556xi 556xi russian 556xi trigger upgrades 55x 9mm ammo acog accuracy adapter advice bayonet bipod black adjustable folding stock bolt bushnell ar diopter sight fishgill fix accuracy 556 swat flash hide for sale galil gas block gas regulator gas tube hand guard handguard help hume's 556 inconsistent zero jmac customs keymod lower mag magazine release mcx mfi mfi diopter muzzle device p-556 p556 parts parts kit patrol pistol piston quad rail question rail retainer cap sg551 sg556 sig sig 551 sig 553 sig 555 sig 556 sig 556 adjustable stock sig 556 classic sig 556 folding stock sig 556 handguard sig 556 parts sig 556r sig 556xi sig folding stock sig p556 sig sauer sig sauer 556 parts kit sig sauer556quadrail sig556 sig556 parts sig556xi silencer sold stock stock adapter suppresor suppressor surefire swat swiss swiss folding stock swiss stock top rail mounting screws troy wtb

  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. Buy Sell Trade (Non-FFL)
    Sig 553 Lower 2014 mfg with all Swiss made parts except stock/stock pin and pistol grip (US Sig grip) (Mag pictured not included). New take off of unfired Sig 553 (made in Switzerland) $1000 http://oi66.tinypic.com/2053xua.jpg http://oi64.tinypic.com/2mdfm9x.jpg Swiss Sig 553 30rd Magazine $75...
    553 gas regulator lower piston sig 553
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