Winchester L.C. M193 5.56 55 Grain FMJ Brass Centerfire Rifle Ammo 20RD BOX 1000RD CASE. C. M193 5.56 55 Grain FMJ Brass Centerfire Rifle Ammunition online at OpticsPlanet. This Winchester Ammunition features Full Metal Jacket (FMJ) bullets that deliver powerful stopping power perfect precision and consistency. With premium brass cases equipped with full metal jacket (fmj) bullets. With great promotions on Ammunition and other superior rifle ammo from trusted brands like Winchester you re sure to find the ideal cartridge for your next hunting trip or range visit. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Winchester L.C. M193 5.56 55 Grain FMJ Brass Centerfire Rifle Ammunition: Manufacturer: Winchester Caliber: 5.56mm Number of Rounds: 20 Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 55 grain Cartridge Case Material: Brass Package Type: Box Included Accessories: None Primer Style: Centerfire Package Contents: Winchester L.C. M193 5.56 55 Grain FMJ Brass Centerfire Rifle Ammunition Winchester WINCSGM193KW: L.C. M193 5.56 55 Grain FMJ Brass Centerfire Rifle Ammo 20RD BOX 1000RD CASE