Home CMMG AR15 Lower Receiver Assembly Expert Buying Advice

AR15 Lower Receiver Assembly Expert Buying Advice

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Do you know the difference between a milled and forged lower receiver on your AR15 gun? Chris Michel explains.

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20 COMMENTS

  1. All lower receivers will need to be serialized…… that will be a new 2021 ATF regulation….. They say the receiver will end up sooner or later becoming a weapon…..It will be a new world with Joe Biden in the house….

  2. CA gun laws caught up on the 80% receivers. I'm not a lawyer but from my research it looks like once you complete an 80% in CA, you have to apply for a serial number. No doubt this message will hurt some feelings, feel free to correct me if you have proof I'm wrong.

  3. Hi Chris……….I have a colt AR – 15 H Bar A 1. The gun has a built in Carrying handle on the upper section. Do they make a Scoop Rail for this gun so I can add a scope to it….? Please let me know if you sell this rail for this gun. Thanks. Al

  4. You know that you can have both billet and forged.  Several billet lowers are CNCed from forged ingots.  If the ingots were poured into the ingot form that would be a casting. The T6 is how hard the lower is (heat treating) and the 7075 is the kind of Aluminum.  The standard forged lower will be lighter but weaker. The billet will be thicker, stronger and heaver.  Most likely both will be made from forged aluminum, not always but most likely.

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