Prometheus 6.20mm Delta Strike Barrel for Marui M4A1 / R.I.S. / SR16 / S-SYSTEM / SG551 (ALL+) (407mm) Net-Weight-(g)_192 unlike the majority of LCT's

unlike the majority of LCT's product line

CQB outer barrel and hop-up set and M130 Cylinder

Biggest and one of the hardest kicking handguns

user-friendly lower receiver

Prometheus 6.20mm Delta Strike Barrel for Marui M4A1 / R.I.S. / SR16 / S-SYSTEM / SG551 (ALL+) (407mm) Net-Weight-(g)_192 unlike the majority of LCT'sPrometheus 6. 20mm Delta Strike Barrel for Marui M4A1 R. I. S. SR16 S SYSTEM SG551 (ALL+) (407mm) High grade precision barrel at 6. 20mm diameter for extra power and precision shooting Suitable for Tokyo Marui M4A1 R. I. S. SR16 S SYSTEM SG551 AEG Rifle For custom upgrade user, you can choose a longer barrel PROMETHEUS EG Barrel by LAYLAX (JAPAN) This allows for precise, long range shooting, with 60 70 meter accuracy at under 1J. Length: 407mm