I like HK93 better, but I think AR15 is just better at doing what it's suppost to do. Shoot underpowered .223 fast and accurately.
HK93
Pro:
-Mine never jams.
-Feels very solid.
-More reliable mag.
-Excellent resale value (I don't think those cheaper clones will ever match HK quality)
-HK cool factor.
-I find diopter sights of HK easier and more accurate to use.
Con:
-Very front heavy.
-poor ergonomic.
-no bolt hold open (major flaw).
AR15
Pro:
-Light, Well balanced, and Very ergonomic.
-Bolt hold open (must on infantry weapon)
-Highly modular (though HK93 too can be modular with HK KAC RAS)
Con:
-Though fairly reliable, not inherently reliable as HK system My M4 jammed couple times. One too many.
-Feels 'toyish'. Annoyint sproing buffer noise.
-Lesser resale value and more difficult to sell (market is saturated with post/preban ARs now).
-EVERYBODY has one (though mine is pretty pimping).
Conclusion?
- I like HK93, just because I like HK, but if I need a rifle for unlikely SHTF scenario, I'd grab AR15 with Aimpoint.
-Get
HK91 . You need .308