Quad-Rail Hand Guard

From the Elite Force Airsoft Competition Series the HK MP5 SD6 is an AEG rifle with injection-molded polymer receiver and metal alloy outer barrel

but you don't want to get caught on the field with an empty magazine

ULTIMATE®’s cylinder parts are designed to give the best possible air compression and durability

Valken Thunder V2 CO2 Sound Simulation Grenade Shells Style:Standard Quad-Rail Hand GuardThe Valken Thunder V2 Co2 Sound Simulation Grenade Shells are the next generation of Valken Thunder V sound grenades. This airsoft simulation grenade shell and emits noise only when used in conjunction with the Valken Thunder V2 Core (sold separately). Designed to mimic the loud bang of a tactical flash bang grenade, these replacement shells are compatible with 12gram Co2 cartridges that, when the cores pin is pulled, fill the shell with Co2 and then