Primary Arms has Anderson closed ear lowers on sale and I picked up one to use for my 20 RRA varmint upper (556/223). The question I have is does it matter if I use a carbine or rifle buffer assembly? Based on my research it shouldn't... but I wanted some more input. Thanks!

 

Oh btw here's the link for the lower: http://www.primaryarms.com/anderson-manufacturing-ar-15-stripped-lower-receiver-closed-ear-ar-15-a3-lwfor-um-closed

It shouldn't, but you may need to switch buffer weights for optimal function and feel. However, in my opinion, unless a A1/A2 length stock is too long for you, then go with the rifle assembly, they are softer feeling.

Either is fine..

 

Carbine tube > carbine buffer

Rifle tube > rifle buffer

 

I have a similar setup with the closed anderson lower and an A4 20" RRA upper and used both length tubes without any issues.

Thanks guys!

Don't discount the A5 tube if you want an adjustable stock style stock.