Used gracoil off a browning high post trap, dimensions at stock are 1.62 inch wide x 5.125 long . 125 shipped

Hello all... WHat is the difference between the Graco length of pull adjustable plate and the one on the Stock positioning System site? The reason for asking is, will the Graco drill fixture work on both? Thanx Mike

I recently inherited a stoeger competition combo and am looking at installing a gra-coil recoil reduction system on it. Has anyone had any experience installing one of these units, and were you satisfied with how the unit works, does it have a noticeable difference in the felt recoil? Thanks in...