Hello,

im assembling my first AR, and i have some questions about the buffer assembly.

i have a stag lower, RRA LPK, and an ACE skeletonized stock.
i plan on getting a Stag 2ht upper <16 in barrel, CAR gas system>

the Ace Stock did not come with a buffer assembly.  
...so what buffer do you guys recommend that i get?   is there a buffer assembly that comes with the 2x spring?

The ARFX stock requires a rifle buffer tube ( A1/A2) will use a rifle buffer, and spring.

As far as the 2X spring I'm not sure. I have always used standard springs they have always worked for me.