APA's patented Tru-Loc scope rings are built to higher standards than any other scope rings on the market to date. Our rings go through a quality control process that eliminates any ring that has .0005 of runout or cant. The relationship between the bottom of the ring to the center bore where the scope sits is hypercritical to us. We hold this tolerance for two reasons. First we have no "matched sets". Each individual ring matches perfectly to any other ring of it's size. This allows your optic to be mounted into a completely stress free platform regardless of the orientation of the rings. Second is the ability of these rings to return to zero after being removed from a rifle. Our design is not torque sensitive and will return to zero whether tightened at 10 inch-pounds or 40 inch-pounds. If your base is slightly out of spec our rings adjust themselves and self center as you tighten them down. You'll also notice that we don't have "sizes". Our rings are listed as center height from the bottom of the ring to the center of your optic. This means no more guessing games when it comes to what size you have for future reference when deciding what your next set will be. There are many reasons why all of this is an advantage.
Our rings weigh 3.8 - 4.4 oz per set depending on the height selected