My buddy who bought this a month ago:
Swapped the handguard for a quad rail, attached a magpul sling, magpul BUIS, and a Vortex SPARC. He's got probably right at 600 into it... It's ready to rock
If you go to there website and look at the daily deals, you can order a complete rifle for $370 now with free shipping! The Ruger .556 is $449 free shipping.