[ujiro]

Hey there

So I have a Magpul PRS for a GBBR coming, but I realized the GBBR has a 6-pos receiver extension tube, instead of the A2 rifle length extension tube.

What parts will I need to swap the GBBR over to using the rifle length receiver extension? Obviously I need the receiver extension tube (any recommendations on a good brand?). I am guessing I will also need a lengthened buffer spring. Do they make the different buffer springs for airsoft (carbine vs rifle length), and do real steel buffer springs work?

Any help or advice would be great.