varmint ar-whats needed?

Depends entirely on the varmints and ranges. 'Chucks at 200 yards are a whole different accuracy requirement than prairie rats at 400. For the former, just about any AR will do. But hitting a beer bottle sized critter at a quarter mile requires an entirely different level of precision.

Out here on the Eastern plains of CO, it's all about the prairie rats. I have 3 dedicated varmint rifles. Two are bolt guns in .17 Rem and .220 Swift. The third is this AR with a 22" Wilson bull barrel and Hyperfire 24-3G trigger, built on my one-off billet steel lower and topped with a 5-15x Pentax scope:

This is what I did ...no regrets!!

https://www.stagarms.com/model-6-super-varminter/

https://www.budsgunshop.com/catalog/product_info.php/cPath/2084_36_800/products_id/99072

I bought a flat-top dedicated varmint upper from CMMG, strictly for coyotes and jackrabbits. Lightweight 20" barrel, 1:14 twist. It turned out to be an easy one-MOA shooter for five-shot groups with 55-grain soft points. Reliable for first-shot POA = POI.

Good trigger. Midway has a "customizable" lower kit. Comes without a trigger. The idea is you're gonna get a good one anyway, why spend money on the cheap one?

Enkiduthewildman said:

Good trigger. Midway has a "customizable" lower kit. Comes without a trigger. The idea is you're gonna get a good one anyway, why spend money on the cheap one?

Click to expand...

Ditto that ... Occasionally PSA has kits with better triggers in them ... mostly with different Geisselle's or ALG's and sometimes with their own polished stock trigger

One of my favorite varmint rifles is the modestly priced Rock River Arms Model NM A4 "National Match" rifle, having a .223 Wylde Chamber; a 20" Air Gauged Heavy Match s/s barrel with a 1:8 twist and a match, 2-stage, chrome trigger group. This rifle is a tack driver with a Burris 3x9 powered, variable scope on top. A mite heavy, though, if much walking is anticipated.