SilentStrike is the world’s only Jacketed Frangible Full Cycling/Functioning 5.56 and 7.62 X 39 subsonic round that will operate the AR platform and AK47 at 1025 FPS in semi and full auto using a dense, lead-free, compressed powdered metal core allowing the round to generate sufficient gas pressure to fully function the weapon without modification. SilentStrike is excellent where stealth and maximum performance is needed for a successful mission. SilentStrike allows the operator to carry out his mission without giving away his position. A 1x7 twist with a NATO chamber is required for best results. SilentStrike is the only frangible that is safe to shoot with suppressors. SilentStrike is THE QUIET, LETHAL round. Buy 7 Boxes get a 10% discount and free shipping