The lower half of the ABR is mounted to the upper half via dual hardened steel dowels that slide in linear bearings. It’s controlled by a thumb wheel that allows extremely precise height adjustments.

When combined, the consistent, straight recoil characteristics and the super-fine height adjustments make the ABR a valuable tool for extreme-range shooting. Extreme long range shooter James Stephens won the Thunder Valley Precision ELR match with an ABR, and he credits his consistency to the device. It’s ideal for F-Class and Tactical Benchrest shooting, too. Every ABR is CNC-machined from U.S.-sourced 6061-T6 aluminum and well-finished against corrosion and wear with Type II anodizing.

It’s not often that a single piece of equipment provides a significant boost in both ease of use and accuracy for long-range shooting. Long Shot Precision’s ABR offers both.

It didn’t take long to realize that I should never again accuracy ­test a rifle without using an ABR. I previously used various bags (usually filled with sand) to get a rifle oriented at a good natural point of aim, and then I squeezed the bag to fine-­tune my point of aim. This works well, but it’s one more thing to do and think about when shooting. A short lapse in concentration and it’s easy to pull a shot a half-­inch or so away from the group simply by making a small mistake while stabilizing the toe.

What makes the ABR special is that it removes all muscular tension from stabilizing the toe and eliminates one more source of shooter error. The experience that educated me the most was my first group fired with the ABR attached. I sat at the bench and thought, “Let’s see how this thing does.” Then, I fired off a brisk five-­shot group at 100 yards. Using factory seconds from a 6.5 Creedmoor, the group measured .26 ­inch. I’ve had this rifle for many years, worn out a few barrels on it, and most of that shooting was with factory ammunition. This group was just .08-­inch larger than my personal best with factory ammunition, which was accomplished with much less effort.

The ABR worked well with both rear supports. The AI ASXR handles recoils like a champ, even when chambered in the stout .300 Norma Magnum, as mine is. With the ABR on the stock I found the rifle’s already excellent ergonomics noticeably improved. The odd-shaped piece of nylon that comes stock on the ASXR doesn’t have much surface engagement, so swapping to the larger bottom piece on the ABR was a big step up. The rifle tracked great on both bags, and I experienced less reticle jump than before.

The real magic of the ABR is the wheel that raises and lowers the base to fine tune the vertical position of the crosshairs. With the ABR pressed firmly into either bag so that they take a set—that’s the beauty of the lightweight Git-Lite fill, which provides sand-like stability at a fraction of the weight—the crosshairs don’t budge until you manipulate the wheel.