The USA556JF is ideal for high-volume short to medium range indoor and
outdoor training and target use in modern sport rifles. It features a
5.56mm shell case and utilizes a lead-free brass-jacketed bullet with a
frangible core and lead-free primer. The frangible core facilitates rapid
bullet break-up once a hard target is hit thereby minimizing airborne lead
at the shooter station as well as downrange lead in bullet traps.
A number of months ago, DefenseReview was informed by one of our contacts in the U.S. military Special Operations (SpecOps) community that our Special Operations Forces (SOF) assaulters/operators now have a new, specialized 5.56x45mm NATO (5.56mm NATO)/.223 Rem. round at their disposal that’s been unofficially referred to as the “5.56 Optimized” (pronounced “Five Five Six Optimized”) and/or “Brown Tip”, because the round has, appropriately, a brown tip.