History of the Adjustable Bag Rider

After purchasing one of the original Ruger Precision Rifles, I immediately began adding enhancements to decrease my group size and improve my competitive edge. This included a new 26" barrel, custom reamer, new bipods, a 30 MOA scope base, a new hand guard and new triggers.  Still, no matter what I purchased, groups didn't shrink the way I had hoped or expected.  Then it dawned on me: what I needed was a rock-solid platform that removed variances due to natural body movement.  I knew some of the variations came from the squeezing, settling and inconsistencies of using a rear sand sock.  In addition, my hand tired from having to maintain the squeeze on the bag while waiting on the wind to cooperate to make the shot.

I contemplated buying a heavy rear bag, but it wouldn't solve the need for vertical adjustment.  I considered buying an adjustable front rest, but the weight and expense were prohibitive. I decided nothing available gave me what I wanted so I put my talents to work to design and build my own solution.  In 2017, I began using my tool and die experience to develop something brand new in my machine shop.  This was the beginning of the Adjustable Bag Rider.

My goal was to create a vertical adjustment tool that was light weight and could easily be installed with existing clamps and bolts to the Ruger Precision Rifle.  I began working on a prototype that lacked some functionality, but proved the ABR would work.  The addition of linear bearings to the second prototype nailed the design.  I use that second prototype today and it still works as well as the day it was built.