JB Unicorn Tight Bore 6.03mm Barrel - M4 Series, 363mm (14.29in)

JB Unicorn Tight Bore 6.03mm Barrel - M4 Series, 363mm (14.29in)

  • Sale
  • $27.95
Shipping calculated at checkout.
The JB Unicorn Tight Bore 6.03mm Barrel - M4 Series, 363mm (14.29in) is the product you didn't think you need, but once you have it, something you won't want to live without.

Inventory Last Updated: Jul 22, 2026