HK416 A3/A5 BARRELS

These A3-profile barrels are designed to meet original HK416 A3 specifications and can be ordered with either an A3 or A5 barrel extension, allowing proper fitment across multiple HK platforms while maintaining reliable cycling and accuracy.

  • Available with A3 or A5 barrel extension (select at order)
  • Correct A3 barrel profile for authentic HK416 builds
  • Standard 3mm index pin for alignment to A3-spec uppers
  • Proper dual roll-pin slot as used on factory A3 barrels
  • Ideal for HK clone builds and armorer-level retro or crossover projects
  • Built with tight manufacturing tolerances for dependable performance