Ar Buffer length?

[hatchetbearer]

Courtesy of The US govt, my bank Account is $3500 the richer, and I am going shopping. Back to my question, I am buying Ar parts and am going for a 16" upper
(specifically http://www.aimsurplus.com/acatalog/CMMG_.223_5.56x45_AR15_Mid_Length_16__Complete_Upper_Half.html)
, my question is does it take a rifle length buffer and buffer tube or a carbine one. I have only dealt with full length m16A4's in my days.

thanks

 

[Bartholomew Roberts]

You can use either one. It has more to do with the type of stock you are using.