Planet Eclipse Etha Shaft 4 Boost Barrel Back Kit - Dust Black

Planet Eclipse Etha/Etek 4 Shaft 4 Boost Barrel Back Kit. This 2 piece barrel back kit includes two barrel backs: .685 & .689 bore size.

**NOTE** This barrel back kit will only work with the Planet Eclipse Shaft 4 barrel fronts. **NOTE**

• .685 & .689 Bore Sizes