Madbull Noveske Low Profile Gas Block air seal This updated ERG takes the

This updated ERG takes the professional airsoft training M4A1 model to a new level of performance with a one-piece full metal alloy upper receiver

width 5-1/2 inches

Ambidextrous thumb safety

and an uninterrupted upper rail platform

Madbull Noveske Low Profile Gas Block air seal This updated ERG takes theDescription: Madbull Noveske Low Profile Gas Block The Madbull Fully Licensed Noveske Low Profile Gas Block is designed to fit inside rail interface systems for those that like the mid length RIS look. Similar Gas blocks have become popular and can be seen on numerous precision and civilian style AR 15 rifles, its another great way to customize your AEG to make it your own. This gas block features a small but visible Noveske logo on the front, it adds