Fire Support

Guarder New Generation SR-16 M4 Metal Receiver 

For Marui M4 series AEGs (not recoil versions)

The bolt/Dust Cover can be close and eject, just like MARUI Original.
Aluminium Diecast Construction
- Surface Anodized
- New generation design, Dust Cover can be ejected / closed
- Realistic looking seperate pin parts for lower receiver
- Includes Enhanced Hop-Up Set with hop rubber (GE-07-24)
and 15 other metal receiver parts
- Cocking lever
- Ejection port cover

Link to more information

http://www.intrudershop.com.tw/show_product_eng.asp?idproduct=766#top