Picture of a rare 'high speed' Grail rifle by SLR15, initially released in 2005.

Interesting build from the era where AR rifles were going through a time of rapid iterative improvements.

The tube fore end was still cutting edge stuff at the time. Interestingly, no contemplation of any kind of monolithic rail. There is still a fixed front sight block, which is not just a left over feature, but an intentionally kept one. The front sight is advertised as having tritium illumination.

The fixed Sully stock which keeps the bottom facing slingloop is another sign of the times this was designed in. I think pretty much any high end AR outside of a DMR role (and even then) these days is coming with a collapsible stock. This one comes with a fancy upgraded fixed stock.