POSEIDON Air Cushion Rifle Barrel for GHK GBB

Diameters: 6.03~6.04mm
Length: 229mm~455mm

PG-H01 229mm For MP5 & MP7 with silencer 
PG-H02 275mm For M4 CQBR / G36 / MP5 with silencer / SCARSeries
PG-H03 363mm For M4 CQB / G36 / 416 / SCAR Series
PG-H04 407mm For M4 / 416 / AUG / AK Series
PG-H05 455mm For M4 / AK Series