Prometheus 6.20mm Delta Strike Barrel for M4 / SR16 / SG551 AEG (363mm)

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