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  1. Uppers, Lowers, Barrels and Parts
    Hey everyone I have these parts for sale. Actual Swiss 552 handguard Jmac customs 552/556 HG Retainer Gas block with folding sight
  2. Introduce Yourself
    My name is Rick, I am obvious a new dude to SIG 556 XI rifles. I have never joined a thread before and not super chatty, that aside I do like helping helpful people. I have put together several AR10 and custom .308 bolt guns. Is there anything I should know to watch out for. 2017 carbon 16"...
  3. 556 Discussions
    Can anyone sell me or direct me on where to buy the sig 556 (rifle or pistol) mag release. Per the sig schematic part number 502. It is not shaped like the standard AR mag release.
  4. Non-FFL
    I am looking for a factory complete Sig 556 Patrol parts kit as well as other spare parts for the rifle. I'm trying to get some spare parts together as I have really grown to like the gun. Please let me know what you have. Thanks
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