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80% receiver

  1. AR-15 General Discussion
    Does anybody know the legality of building an sbr on an 80 percent lower? I dont see why it would be a problem, but I dont know how one would go about getting the tax stamp on an unserialized gun without serializing it. This would be my first nfa restricted item Thanks.
  2. Build It Yourself
    I'm dry fitting parts on my 80% receiver build before I drill any holes, (measure many times, drill once), and using used steel milsurp mags to help locate before drilling the trunnion and trigger guard holes. All of the mags fit snugly in the receiver with the trunnion in place, but the...
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