Explore 4 Grey is a robust

but also provides better comfort

it also has their own Quattro Trigger system

It comes complete with a picatinny rail underneath for e

The gun is a modification of the "normal" MK23 Non Blow Back gun

Lifesystems GlowMarker gas Explore 4 Grey is aLifesystems has made some smart little Glow Markers that you put on your gear and they light up when it gets dark They come with small crystals that absorb light during the day and emit light when it's dark. They can glow for 12 hours when the crystals are activated with light during the day. They work for about 10 years. These are good to have on your bag, keys, etc., as you will be able to find them in the dark. They are available in several colors: