Board Thread:Questions and answers/@comment-26431461-20160125015352/@comment-27306930-20160404145952

Now that I'm remembering it, I did put the 7K spring in it and removed the AR. That combo is probably what cracked the rod. Then I put in the Final kit and found another home for the 7K spring (maybe it's in the EXDAT now, I don't remember).

So I take back what I said earlier. Go with the 7K but leave the air restrictors in place. Geez, I remember how loud it was with the 7K and no AR - crazy loud :-)