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  1. First AR build: Advice opinions welcome

    Black Rifles
    So I picked up an Anderson arms stripped lower yesterday for $45 + tax. Been wanting an AR for awhile now and have really enjoyed the idea of building my own (since when I buy a new facotory gun I would mod it anyway). It's a .223/5.56 "multicaliber" receiver, my plans are for a .223/5.56 upper...