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- For Glock Gun G17 Gen5 / G19 Gen4 / G19X / G45 (VFC)
- Hop wheel design + vertical tensioner to decrease the tolerance of the original parts
- Vertical turnbuckle with a curve-shaped design for proper BB tuning
- Stable hop effect and better airtightness
- Fits with Maple Leaf GBB/VSR Hop Joint and Pistol Inner Barrel or "Crazy Jet" Inner Barrel
