Mossberg MMR Hunter (Mossberg's version of the AR-15) but was unable to, due to a lack of Quality Control at the Weaver factory. Weaver, a reputable manufacturer of numerous optics, sites and mounting systems, failed to provide the correct size nuts for the screws they packaged in there scope ring kit. The nuts were simply way too large. I'll be taking the scope ring kit back to my local gun shop for a replacment; I need a taller set of rings anyway.
And yes, a full review of my Mossberg is forthcoming. ... And, yes, I am aware that Christmas too, is coming.