This is a replica of the SIG552 commando developed by the Swiss company SIG, entered service in the mid 1980s. It has been adopted by many special services, including the US navy seals.

Sig552 Specification
Real Weapon Battle Storm Weapon
Ammunition 5.56mm NATO Infra Red Laser 980nm
Length (folded/unfolded) 504/730 mm 550/775 mm (with barrel unit)
Weight 3.1kg 2.74kg
Magazine Capacity 30 rounds Adjustable 1-99, unlimited
Rate of fire 780 rpm Adjustable 1-1500 rpm
Effective Range About 300M Adjustable