Prometheus 6.20mm Delta Strike Barrel (509mm) for Marui M16A1/AUG

DELTA HOP system uses an injection molded part, with 2 lower ridges aligns BB in the center of the inner barrel, forming a 3-point contact along with hop packing for greater consistency.Low friction material used with enlarged hop opening for better compatibility with high firing rate configuration6.20±0.01 mm inner diameter allows greater BB inconsistency, reduces BB bouncing .