**This is an Airsoft Replica that shoots 6mm plastic BB
A Sportline Armalite M4 with the massive looking yet remarkable lightweight S.I.R. system fully licensed by A.R.M.S. Made famous by US special forces, the S.I.R. system was one of the very first free float rail systems that allows a customized set-up of tactical accessories.
On this Airsoft gun the SIR (Selective Integrated Rail) allows super easy access to the battery compartment in the front.
- Adjustable hop-up
- Chrome mock gas tube
- Rear ARMS flip up sight contoured to fit rail system
- Easy battery compartment access
- Front grip included
- Removable side rail sections
- M4 flex stock
- Raised rail brings up the optical sights better when wearing a mask.
- 112 m/s / 367 fps
- 350 high cap metal magazine
- ABS body
- Metal barrel and stock tube