Tough installation but looks good - Spikes Tactical Delta Ring Assembly w/Mil-Spec Barrel Nut

This item was a complicated installation for me. Had a hard time aligning the barrel nut notch with the gas tube entry port on the upper receiver. I wasn't using the specific tool designed for attaching barrel nuts, it is possible that was the error but even in a vice block with channel lock pliers I couldn't get the notch aligned without using a large amount of force. Managed to get in aligned in the end, and works fine. Maybe it was just my experience, but something to consider when building an AR platform.