Airtech Studios Advanced BB Tube for Silverback SRS A1/ A2 / HTI Rifle (Red)

Airtech Studios Advanced BB Tube for Silverback SRS A1/ A2 / HTI Rifle (Red) Metal Construction Suitable For Silverback Desert Tech SRS A1/ A2/ HTI Designed to improve the consistency of the rifle platform used. Locks the hop chamber to prevent axial displacement Guarantees "dead-center" chamber lock Eliminate guess-work before locking the outer barrel