From there, Barrett took over the manufacturing of its barrels, bringing in blanks and running them through its own CNC machine. It started using match-grade single-point-cut barrels that are hand-lapped, Barrett says.
“This is like what guys are putting on their one-off benchrest rifles. That’s what is on our production gun,” he says.
Taking over barrel manufacturing also allowed the company to perfectly cut the chamber into the back of the breech. “That improved alignment of the chamber, and better dimensions of the chamber was probably 75 percent of the puzzle,” says Chris Barrett.
There was a little slop in the neck and throat of the chamber, and those tolerances were tightened.
“The machine-gun chamber is sort of big and floppy because it has to run on full-auto like a scalded dog in the middle of the desert. A sniper rifle that holds only 10 rounds doesn’t see that rate of fire. So, we’ve optimized our chamber for precision.”