Bought a Mountain Ascent .280AI a year ago, removed the brake, installed the cap as I removed it from the box and scoped it with Talley QDs, silver and finally, a Leupy silver 3.5x10x40.

Running 160NPs over RL-26 at 3000 fps/mv and good groups, don't care if the threads are there or not.

Packed it some in steep BC mountains last year and I LOVE this rig, wish I had had it 50 years ago!