Description

The ICS S.I.R is based on the M4 S-System, a very versatile weapon that has a nice look and feel with its bulked up hand guard and great looks, the S-System is a popular favorite among airsoft skirmishers.
The retractable stock is nice and positive to suit most users and feels solid when locked into position.
Tactical flip up sights as standard, adjustable hop and metal body, what more could you want.
The S-System feature the ICS split gearbox that ICS is famous for and allows for quick spring changes when needed and also the working forward assist to release spring tension.