Hunters choose Full Metal Jacket when they need harder-hitting arrows and extra knockdown power. Pro-level archers use FMJ to deliver more penetration and shorter blood trails. Utilizing a high strength, N-Fused carbon core wrapped in a full metal jacket, the AXIS FMJ boasts more bone-crushing power for deeper penetration and more pass throughs. The Easton Dangerous Game shafts feature a guaranteed straightness of plus or minus .002 and a weight tolerance of plus or minus 2 grains. GPI = Size 300/16 | Size 250/17.7 The X-Nocks are installed and the Axis FMJ Dangerous Game uses brass HIT inserts.