555 beads are threaded 0.5-3mm
555 Barrels are matched and serialized to the receiver upon manufacture. We do not sell replacement barrels.
Please see the article below for an overview of the 555 family of shotguns:
555 FAQ
555 beads are threaded 0.5-3mm
555 Barrels are matched and serialized to the receiver upon manufacture. We do not sell replacement barrels.
Please see the article below for an overview of the 555 family of shotguns: