556 NATO – 77g SMK – NAS3

Product Description: You Asked, we listened!  TRACE 77g 556 NATO using a NAS (Nickel Alloy Steel) case is here.  Pushing a 77g SMK at 2900 fps out of 16 inches with high precision and low ES/SDs is what TRACE 556 delivers.  Perfect for Gas Gun matches or just tapping steel at distance; TRACE 77g NAS3 556 is Faster, Flatter, and just plain Funner!  Sold in 150 round packs – Get some today!

TRACE is proud to be the Official Ammunition of the 2026 Gas Gun Show Precision Gas Gun Series.  Visit http://www.thegasgunshow for more information.

P/N: 556N77SMK

Cartridge: 556 NATO NAS3
Projectile: 77g SMK
G1 BC: 0.371
G7 BC: 0.190
Projectile Length: 0.994″
MV: 2900 fps
MPH: 3.8
Test Conditions: 16″ Barrel, 1000ft DA
Recommended Twist: 1:8 or Faster

Shipping Note: Due to shipping and other restrictions, we do not ship to Alaska, Hawaii, Massachusetts, or Washington DC.

*MPH is a measurement of a cartridge’s ability to resist wind deflection down range. It is a measure of the wind required to move the projectile 0.6Mils at 600yds. The larger the number, the less sensitive the cartridge is to influences from the wind.

Cartridges/Box: 150
MSRP: $250
Status: In Stock
Lead Time: Ships in 10 business days