- Rotary style unit
- Window to see the inside of the unit and allows the ability of the tracer module to be attached (sold separately).
- Different hop up arms for R-Hop,S-Hop,Flat-Hop
- Dual Spring Design
- Fits most M4/M16, Including Krytac (DOESN'T FIT KWA) -ME
- MI Version Designed for ICS Models
ME Most M4/M16 AEG M4 Rifles MI- Fits ICS Sytle M4 Platforms
DISCLAIMER: Please use discretion when installing custom parts as fit and compatibility may vary. Some modification may be required. Professional installation recommended.