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

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

Short rail covers 1½ M-LOK® slots or 3 KEYMOD™ slots

an inner and outer barrel

Rubber butt-pad offers positive shoulder purchase to prevent slippage for optimal accuracy

Valken Thunder V2 CO2 Sound Simulation Grenade Shells Style:Standard ULTIMATE®’s cylinder parts are designedThe 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