Is it simply a matter of removing the heatshield/bayonet mount & sling to be legal?
Also, what's the simplest/cheapest replacement front sight, a BB with some epoxy, or a droplet of Liquid Metal, or do I have to pay to have it drilled and tapped?
I got a good deal on a IAC '97 because the heatshield and sling were already gone, but there's no front sight.