For sale or trade, I could use a 1/2x28 keymo mount or two.
SWR 3 lug mount older style. Used with finish wear but works fine $130 shipped.
SOLD-YHM 1/2x28 mount (yhm-5m2) with muzzle brake and shims. Will also work on Dead Air, Energetic Armament and others. Removed from a new can in transfer so there is no retail packaging $125 shipped for both.