Ikonick Usa 300 Blackout 147Gr Fmjbt Rifle Ammo 20Rd 25Bx/Cs A. This Ikonick USA 300 Blackout Ammo features Full Metal Jacket (FMJ) bullets that deliver strong stopping power superior accuracy and predictability. With great promotions on Ammunition and other top-tier rifle ammo from trusted brands like Ikonick USA you re sure to find the best round for your field or range use. Stock up today to save big on ammo and other top-tier tactical hunting and outdoor gear at OpticsPlanet. Specifications for Ikonick Usa 300 Blackout 147gr Fmjbt 20rd 25bx/cs: Manufacturer: Ikonick USA Caliber: .300 AAC Blackout Bullet Type: Full Metal Jacket (FMJ) Bullet Weight: 147 grain Dimensions: 1.30 X 2.40 X 5.15 in Height: 1.3 in Width: 2.4 in Package Contents: Ikonick Usa 300 Blackout 147gr Fmjbt 20rd 25bx/cs