We've got 5 AR15's three .223 Wylde chambered, 1 6.5 Grendel and a 6mm ARC. One is M4 setup 16" bbl; light/laser, Red dot for home & zombie defense, 2nd .223 is one of my favorite builds, it's a 20" Lothar Walther, DD hardware, Timney trigger and Leupold MK4 4.5x14. 3rd is a 24" heavy varmint bbl setup for semi long range sage rats, sports a nikon monarch 5x20, & a 2.5lb Timney. 4th is my wolf rifle, it's an Alexander arms 6.5 Grendel upper on a Founding Fathers lower, another 2.5lb Timney, with a Vortex 4x16. Last one is my oldest sons 6mm ARC, built on a FF lower, Aero precision 20'' bbl and hardware, Geissele trigger, Vortex 4x16, he had it cerakoted in Kryptek Highlander camo it's almost too pretty to shoot LOL
(FF lowers are produced here in Idaho less than 10 miles from my house so most builds are with these excellent 7075 forged lowers)