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I have my year old Stag Model 3 upper up for grabs. Less then 200 rounds down the pipe with zero issues.
Bolt and charging handle not included
Muzzle Device: Stag Arms Compensator (makes this upper sound like a absolute beast)
Front sight: Railed gas block w/Samson front flip sight
Handguards: Diamondhead Drop In Versabase with a couple short rail sections
Looking to get 600 for the upper. I'll get photos posted up tonight when i get home. If your in the Nashua - Londonderry area i can meet you at the range to test fire it on one of my lowers.