Looking to buy something but taking my time to do the research, and would welcome your opinions.  

I want a quality battle rifle to take advantage of all the surplus ammo in the market.  I am considering 1) AK variant, 2) HK G3 copy, or 3) FN.  Already have two ARs and will most likely get a couple more before the year is out but right now, wanting 1, 2, or 3.  Opinions on each would be appreciated.

This how I would rank your choices by price, parts availability, mags and accessories.

1) FN is my first choice because ample parts and accessories. Mags are cheap. Price is resonible for a post ban.

2) AK is second because it is cheaper than the next option.  but then you may get some rough
AKs.

3) HK clones is third choice because of the slight price increase in parts and accessories.