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AAP01 Part 88
14mm ccw threaded with a thread protector
A simple drop-in upgrade for VFC and Umarex G-series gas blowback pistols
- 4 Colors available for base & shoe: Silver
Its TDC (Top Dead Centre) design feeds hop pressure straight down the centre of the BB
TTI - INFINITY TDC Hop Unit for Umarex / GHK G17 Gen5 MOS - Black HK Army AAP01 Part 88TTI Infinity TDC Hop Unit for Umarex GHK G17 Gen5 MOS The TTI Infinity TDC Hop Unit for Umarex GHK G17 Gen5 MOS is a one piece, full CNC machined hop up chamber designed to replace the fragile factory unit. Its TDC (Top Dead Centre) adjustment system applies hop pressure straight down the centre of the BB for more consistent backspin and a flatter, more accurate trajectory. Machined as a single solid piece, it removes the flex and wear points of the
