Killhouse Econo Rail Covers 4 Pack Goggle & Lens Cases An expansion chamber allows liquid

An expansion chamber allows liquid CO2 to expand into a gas before it enters your marker valve

The Umarex Tavor TAR 21 is the hottest new thing to hit the market

and virtually never wear out

modes & settings to make your gun perform to its full potential and even easier to use

light and other external upgrades

Killhouse Econo Rail Covers 4 Pack Goggle & Lens Cases An expansion chamber allows liquidUsed on any standard 20mm RIS Rail system. This large area rail covers keep sometimes sharp rails from cutting into gear, getting caught on gear, or cutting up your hands. They also can be used to create unique 'custom' looks suited more for your style of play or needs.