Guide Series AR Upper 18"

Already have a lower receiver and looking for the perfect upper to finish your setup? Brenton upper receivers are engineered for hunters who demand performance and reliability—delivering the key features that define every Brenton rifle.

Just attach one of our uppers to your existing lower, and you’ve got a serious hunting rig ready to perform in the field. With options available in all 13 of our chamber offerings (dependent on barrel length) and a variety of colorways, our standalone upper receivers provide an accessible entry point into the Brenton lineup—without breaking the bank.

Each upper receiver also includes a Brenton Long-Load, caliber-specific magazine perfectly matched to your chosen chambering—so you're ready to hit the field right out of the box.

Special Note
Due to the variability introduced by non-Brenton lower receivers, the Brenton Sub-MOA guarantee does not apply to standalone uppers. However, we proudly extend our Brenton Forever Warranty to cover any issues with function or reliability. Please consult the Brenton Forever Warranty page for details.

Questions? Call 517.281.2571