What Calibers will the OPS-416 work with no Issues?

  1. What Calibers will the OPS-416 work with no Issues?
  • - 223/5.56 – Just install and go.  
  • - 7.62x39 Russian - You will have to use a lighter spring from www.wolfsprings.com. A standard 3oz buffer will work fine.
  • - 300 Black Out - You will need to use a lighter spring from www.wolfsprings.com and a standard 3oz buffer will work fine.
  • - 6.5 Grendel - You will need to use a lighter spring from www.wolfsprings.com. A standard 3oz buffer will work fine.
  • - 6.8mm Rem SPC – A standard buffer spring and standard 3oz buffer will work fine.
  • - 5.45x39mm Russian

*A standard 3oz buffer will work with all calibers.

*Note: Do not use a gas block with an adjustment. They lose too much gas.