It upgrades the gas channel itself from the magazine to the gun so that the gas comes up better and more aerodynamically into your gun

to avoid dry firing

Reinforced at knees

A meal (Real Field Meal) - Chicken Tikka Masala

It is made of good plastic with a lid that can be taken off and on and closed with 2 large locks (one on each side) - In addition

Dye I4 Pro Shadow Sort/Grå 032-kugler It upgrades the gas channelDye I4 Pro is the latest addition to the DYE family. You get all the great things you know about the I4 masks. Namely the slim and lightweight profile and the great fit. The Pro model has just been further developed with the smart strap system that can be turned and This tightens the mask it's really nice to use. You get a thermal lens and good ventilation by using the I4. The model here is Meltdown, which is Black and Red