TTI - INFINITY TDC Hop Unit for UMAREX/ SRC G17-Gen.5 MOS - Black G17 ensuring they fly straighter and

ensuring they fly straighter and farther than ever before

- Compatible with various AAP-01 bolts

- Nozzle Valve spring for GBB 1pcs

length: 57mm or 2

CNC machined high-profile sight set

TTI - INFINITY TDC Hop Unit for UMAREX/ SRC G17-Gen.5 MOS - Black G17 ensuring they fly straighter andTTI 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