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5.56mm NATO Chambered
Barrel Steel: 4150V grade Milspec B-11595E Chromium-Molybdenum-Vanadium (CrMoV)
Gas System varies on Barrel Length Selected
Thread pitch at muzzle: 1/2 x 28 inch
Twist rate: 1/7
Treatment: Many Treatments Available. Gold- Tin, Light Gold – ZrN, Blue – TiALN, Silver TCN. Choose Finish & Barrel Length Before Adding to Cart.
Note: Barrels are turned on centers and never chopped down from longer lengths. SEP Rifling Patents Pending.

TRACK™ is a proprietary rifling known as Single Edge Polygonal (SEP) available through TRIARC Systems. The primary function of this innovation is to provide an improved rifling for a gun barrel, which has a single edge area and a polygonal area separating the grooves. In essence, it is a combination of standard and polygonal rifling. This hybrid reduces any substantial deformation of the bullet due to its minimal engraving. It allows the bullet to move more symmetrically along the barrel, enabling a straighter line towards the target. Furthermore, the tighter seal of the projectile reduces forward escaping gases, and therefore, minimal loss of gas pressures. Ultimately, this design has the capabilities of shooting match grade ammunition at sub MOA accuracy.

Lengths:

17.3"
16"
14.5"
12.5"
10.5"

MRSP $423.53

https://triarcsystems.com/product/cu...-track-barrel/