TTI - INFINITY TDC Hop Unit for UMAREX/ SRC G17-Gen.5 MOS - Black

TTI Infinity TDC Hop Unit for Umarex / SRC G17 Gen.5 MOS

The TTI Infinity TDC Hop Unit for Umarex / SRC G17 Gen.5 MOS is a one-piece, full CNC machined hop-up chamber that replaces the weaker factory unit. Its TDC (Top Dead Centre) design feeds hop pressure straight down the centre of the BB, delivering more consistent backspin and a flatter, more accurate flight path.

Built from a single solid billet, it eliminates the flex and wear of the stock plastic chamber so your hop setting stays put round after round. A simple drop-in upgrade for Umarex and SRC G17 Gen.5 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 / SRC G17 Gen.5 MOS