OCL Testing

Otter Creek Labs in Kentucky performed some independent, HIGH endurance durability testing recently on a GSL Technology built suppressor.

Test Specs:

  • 4.75” barrel 5.56 1:5 twist
  • PWS H4 buffer with Springco red spring
  • Toolcraft BCG
  • 1 magpul D60 filled with M193 ammo
  • Fired Full Auto until empty


The TAC5 durability performed exceptionally well. It passed without damage, under full auto fire, on a 4.75″ weapon.

The video of it firing is uploaded here: