It has been a while Quagmire, but I remember the hub bub when they came out & Ron was up to his ears in government contract work, mostly for the 2nd I.D.. I remember the original as you do for the most part. I think I remember it in GI stock chambered for the M118 special ball & rifled in a 1:10 twist. I thought they also put some in a 18.5" barrel, same chamber and twist. Time to brush up on the stuff I forgot not long ago GI6 .