On the AI AW page there's a message about some of the design variations in the L96/L96A1 & the AW. I don't really know much about the AI AW rifles, but i think some of the improvements of the AW over the L96A1 are a bolt that handles lower temperatures better, slightly different butt stock (L96 has a curvier one), different scope and a muzzle brake. I could be wrong but i think those were some of the differences.