Saturday, March 12, 2022

Quick Recrown and Deburring for the Tech Force TF79 / AR2078A Barrel

Picking up when I left off with the TF79, figured it was time to give the barrel some attention.















The original muzzle crown.   We've seen much, much worse.


















And since it's out of the breech block, here's the aft end of the barrel.  The o-ring grooves and the dimple for the barrel retaining set screw are a bit sharp and bitey.




The pics didn't come out as well as I'd hoped.  Not enough light.  Some aluminum sheeting was used as chuck padding for the barrel.

Skimmed the face.

Recessed, then cut an 11 degree angle.

Flipped the barrel around and knocked down the high spots.  Just softening edges.

Like so.

The crown--before going back to polish.

Some new o-rings for the breech end of things.

A final pic of the muzzle after some polishing and a re-blue.  

I did end up making a new bolt handle.  Really just to try something different.  Try to get that posted in the next few days.

Thanks for reading.