The Frankenstud attaches to your existing pack strap via a stainless steel flat head screw from the back side of the strap. I have a 1/4" hole melted through the strap and the unit sandwiches tightly and you don't know it's there until you want to use it
100% stainless steel bead blasted matt. Weight is 1 oz.
In initial testing the 1st and the second generation Frankenstuds improved with each faze but #3 has proven very effective at allowing hands free rifle cary.
