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Discussion Starter #1
Ok so I'm going to check out the gun store today to see if they have lowers but I am a super n00b and I know there are different calibers for the AR15 and I'm not sure which one I want to go with but when i was looking online they didn't distinguish the lowers with a caliber so is the caliber based on what you get for the upper?
 

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Discussion Starter #3
Wow thanks for the quick reply, anything special I should know, any brands to stay away from etc.?
 

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Not really, just choose the one that has the most appealing roll mark. For instance, a Stag lower will have a deer head which some don't like. I went with CMMG because I got a CMMG upper. I like that my lower and upper are made by the same company.

Most everyone will tell you that a lower is a lower is a lower.
 

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Actually it depends on the calibers your looking at. Some lowers will not work on cartridges that are too long for the 5.56 lower.
 

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Yep.
 

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