Re: I guess I should break down and get an AR .....
Buy a LMT defender 2000 lower, can even get the SOPMOD stock and 2-stage trigger, and build the upper to match your needs.
Even for a Varmint rifle, I see little point in exceeding 18 to 20".
For instance, for anti-personel use, the longest barrel only gives you up to maybe 40 yards of frag range over the 16" match style barrel (180+ yards).
I'm basically an AR/AK guy putting together a couple of precision bolt guns, and I'm blown away by the fine folks here, well done you guys!
My fav AR is this Krieger Recon, a 16" mid gas 1/7 twist barrel cut for the OPS 12th suppressor. Accurate, reliable, medium weight contour. Zero POI shift, hot, cold, suppressed or not.
And I have an 18" Krieger that is maybe even more accurate and a rifle gas system. If you not going to a registered receiver and full auto, the AR might as well be accurate! No FA for me, I spent that money on the .308 bolt gun and a AN/PVS-22.