TTI - INFINITY TDC Hop Unit for Umarex / GHK G17 Gen5 MOS - Black

TTI 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 standard plastic chamber, giving you repeatable hop settings shot after shot. A straightforward drop-in upgrade for Umarex and GHK G17 Gen5 MOS gas blowback pistols.

Key features:

One-piece full CNC machined construction

TDC top-down hop adjustment for accuracy

Replaces the weak factory plastic chamber

Consistent, repeatable hop settings

Direct fit for Umarex / GHK G17 Gen5 MOS