G&p sr15 urx rail front set for M4/M16 electrc gun

New amazing set made of full metal
give incredible strnght and realism to the replica
best installation on asg with metal body
Included parts:

-11 inches CNC aluminum rail system with integrated flip up sight
-16 inches outer barrel with kac 06 flash hider
-Front gas block and gas tube with screws
-Assembly tools and barrel block
- Qd sling ring

Ideal installation on Marui type m16, m4
suggested inner barrel 440mm