Mating Bushmaster Carbon-15 lower and M4 non-carbon upper question


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ZBill
July 15, 2012, 11:44 AM
Any issues in using a Bushmaster Carbon-15 lower with a Bushmaster M4 non-carbon upper? Use for light range duty - 500 rounds per year.
Thanks, Bill

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NG VI
July 15, 2012, 12:32 PM
Can't imagine there'd be anything wrong with that, the lower just holds some parts together, it isn't a very high-stress piece of equipment.

ZBill
July 15, 2012, 02:49 PM
Thanks NG VI - I had assumed it would be ok and thanks for the confirmatory input.

Regards, Bill

kd7nqb
October 30, 2012, 11:02 PM
I saw one of these Carbon 15 rifles today for the first time. Really impressed with how light it is.

Anybody here actually put a different upper on the carbon 15? I am specifically thinking a .300 blackout upper for hunting season.

Numnuts
December 28, 2012, 08:29 PM
I have a top load carbon 15. Is it ok to simply change the lower to modify to mag feed?
I apologize for my ignorance, newbie.

kd7nqb
December 29, 2012, 10:08 AM
First to address my own question. I called bushmaster they said no problem it's all built to the same space other than the barrel nut.

@numbuts: I dont know of a top load model you might be thinking if something different.

xfyrfiter
December 29, 2012, 12:50 PM
Newbie; could that be a kalifornistan version with a bullit button?

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