Modify have sent over details of their latest new product:
GB-05-61
Modify New “2-Ring+” Hop Up Bucking for Modify Hybrid Inner BarrelRe-modify the 3-rings model. New upgrade version 2-ring+ brings the better performance.
It is perfect for the Modify Hybrid Inner Barrel.
Material: aircraft rubber
1st GRADE of HOP UP BUCKING…ACCURATE
Features:
1) 2-Rings make the excellent air seal.
2) Rebuilding the internal dimensions allows the BBs smoothly go in
3) Excellent compression set
4) Superior tear resistance
5) High abrasion resistance(Modify)