**Needs to be used with the R-HOP patch - not included with this bucking**
*R Hop ready, mound free and smooth internal bucking surface makes away with the hassle of bucking modification for R Hop patch use.
- Designed for GBB's / VSR-10/ Striker
- Special Airtight Design
- No mound
- High Tensile Strength
- Excellent Cold-Resistance
- High Abrasion Resistance