H.E.L.O - Case Study - 300 BLK

Here is the NPA 300 BLK HELO SR “companion” Rifle in select fire with a 6” upper and Surefire 7.62 Mini Suppressor specifically designed for LE, when shot with NPA HELO SR ammunition the shooter has the perceived recoil of a MP5 9mm.

  1. 6″ – 1 in 7 twist barrel with surefire 7.62 Mini Brake
  2. NPA patent pending 3 position custom adjustable direct impingement gas block
  3. Spikes tactical lower with select fire trigger group
  4. Surefire Mini 7.62 Suppressor
  5. Magpull stock
  6. RMR red dot
  7. Steiner DBAL

Rifle was holding a 2″ group @ 100 yards from a rest ( we used a 9x optic for test)

Test FBI Denim Protocol

  1. Controlled Environment / 72 degrees F / Sea Level
  2. Test Media – Clear Ballistics gel 20% ( The 10% does not reproduce true FBI Gel, lacks density)
  3. Test Cartridge – HELO SR 300 BLK 125 Grain / Delayed Expansion Variant 03
  4. Test Firearm – Custom 300 BLK AR with 6″ barrel 1/7 twist suppressed Surefire 7.62 Mini
  5. Velocity @ Muzzle – 1,750 FPS
  6. Test Range – 10′
  7. Penetration – 18.2″

HELO SR 300 BLK 125 grain Delayed Expansion Test Variant 3

Note that expansion does not take place until approximately 12″ into gel, this is by design. With our patented bullet we can ” program” the projectile to expand at any depth after impact within soft tissue maximizing damage to a vital organ without over penetrating. Projectile expanded 2X original diameter: