OK, As much as I love the thought of a Tactical Mini-14 (though with a brake instead of a flash hider because I am still in Commiefornia), my dream Mini-14 was the standard 186 series I bought. With its 1/7 twist barrel, it maximizes the Mini's potential with the 77 grain OTMBT MK262 MOD1 ammo so poplar with Spec Ops in the sandbox. The tactical only has a 1/9 twist. the 77s do OK to 100, but start to loose it at 200 with the 1/9 twist,
The front portion of the Mini-14 barrel is about .510", just a tad too large to thread 1/2x28 without turning it down. The rest of the barrel in front of the barrel in front of the sight is 9/16". I thought of threading it 9/16x24, but really couldn't find a satisfactory brake or flash hider.
With that in mind, I carefully used a file to file down about .010" off the muzzle end, and pushed the ridge back about an 1/16" while I was at it. Then, using a TAT and die from CNC Warrior, I threaded the front 3/8" 1/2x28.
I have a Wilson Combat Comp brake for Commiefornia, and a Palmetto A2 flash hider for free America. Because I could not use crush washer because of the short threaded part, I drilled and tapped the bottom of each 6x32, and installed a 6/32 set screw, engaging a matching dimple in the barrel.