I think OR s pretty loose on gun restrictions. I know here in WA we could own silencers, but used to have to go across the border to actually use them legally. :)
I know this isn't specifically on the Sports, but the apple doest usually fall far from the tree.
S&W's M&P 15 Is One Rugged &...
No caliber stamp on my new MP15 either. Funny thing is the instruction manual (first AR15, so I did read it :D) makes a big deal of making sure you know what caliber the gun is by checking the stamp on the lower receiver!. :rolleyes:
Similar to the one that Splittiebus mentioned (ARR-157) Midwest Industries makes a version that has a cutout for the A2 front sight. It's a drop in replacement that provides extended rails. I just picked up my MP15, and was thinking about ordering one, but went with a carbine length KAC...