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Posted: 12/12/2013 6:47:45 PM EST
So I initiated this build after building my own .223 5.56 build AR, however I posed another project on myself. I bought a multi cal. Aluminum billet Lower receiver only, nothing else. So I pose my question to you, what do I need for the complete lower? The upper is a separate issue and my concern only lies with the lower being completed. Can I use a standard lower assembly trigger kit? What's the difference I will see in parts needed. As well because it is a multi.cal. I would want the option of being able to switch out the 9mm to a .223 5.56 setup, and I'm hoping the lower parts will able me to do so. Please let me know.

Thank you,

Link Posted: 12/13/2013 1:17:02 AM EST
[Last Edit: 12/13/2013 1:17:30 AM EST by gtfoxy]
Here is a recent thread in the pistol caliber forum with some info for you.

Link Posted: 12/14/2013 4:45:06 AM EST
Appreciated. Spoke to a very knowledgable 9mm colt style AR dealer yesterday and wow. I now have an almost practical universal complete lower to swap in and out both 9mm & .223/5.56 uppers with ramped bolts with the exception of one part to make it all happen, the mag block. Again thank you
Link Posted: 12/14/2013 9:52:47 AM EST
No need to Thank me. That being said, you are very welcome.

Im glad to hear you found a build path you will be happy with.

Just wait till the BRD sets in again...
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